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BESTIARY

Archaeoaevis

7 recorded variants. Select a variant to see its own stats, artwork and rewards.

LEVEL 40 · BOSS

HP: 130,000
MP: 100
Stagger: 1,300
Strength: 560
Stamina: 350
Magic: 560
Spirit: 350
Speed: 300

14,500 EXP · 12,000 gil

Plan your approach

Recorded elemental weaknesses: Wind

Match your attack to this variant’s resistance. Stored stats and move lists do not establish an exact turn order, a guaranteed status infliction, or demo availability.

Test damage assumptions · Compare complete builds

Element resistance

Fire0%

Ice0%

Wind−50%

Earth0%

Lightning0%

Water0%

Light0%

Dark0%

Status resistance

Poison100%

Blind80%

Sleep100%

Silence80%

Paralysis80%

Confusion100%

Petrify100%

Charm100%

Berserk100%

Doom—

Slow30%

Strength down30%

Stamina down30%

Magic down30%

Spirit down30%

Instant death100%

Gravity100%

0% neutral · Negative: more damage · 100%: immune · 200%: absorbs. Status percentages are resistance, not infliction chances.

Drops

NormalNone

RareNone

Steals

NormalNone

RareNone

Drop percentages are base chances before bonuses. Steal slot probabilities are still being verified.

Attack Pattern

Repeats a six-action cycle, shortening the cycle below half HP; Archaeoaevis’s barrier change randomly selects one of six forms.

Numbers count this boss’s own actions; combos are listed together. Battle-turn rules are labeled.

When	Action
At HP at least 50%, six-action cycle	Use Stonera (40%) or Stonega (60%); Archaeoaevis’s barrier attack; Stonera (40%) or Stonega (60%); Thwack (70%) or Rabid Claw (30%); Stonera (40%) or Stonega (60%); Barrier Shift. Repeat.
Second attack in the opening pattern	Use Barrier Shift before Archaeoaevis’s first barrier change. After that, use Rend (about 33%) or Flatten (50%) or Constrict (about 17%).
First action below 50% HP	Restart with this shorter pattern: Stonera (40%) or Stonega (60%); Thwack (70%) or Rabid Claw (30%); Stonera (40%) or Stonega (60%); Barrier Shift.
Whenever Archaeoaevis uses Barrier Shift	Randomly use one of Archaeoaevis’s six barriers.

Combat Actions


Hack	None	Physical	Single Target	12	1	100	25	—	Listed as the replacement attack when Silence prevents a spell.	—
Rend	None	Physical	Single Target	18	1	100	25	—	Second attack in the opening pattern	—
Flatten	None	Physical	Single Target	18	2	100	25	—	Second attack in the opening pattern	—
Constrict	None	—	Single Target	—	—	—	—	—	Second attack in the opening pattern	Effects: Automatic Skill. Open the ability for details.
Barrier Shift	None	—	Self	—	—	—	—	—	At HP at least 50%, six-action cycle Second attack in the opening pattern 1 more First action below 50% HP	—
Stonera	Earth	Magic	AoE	18	2	100	14	15 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal earth-type magic damage.
Stonega	Earth	Magic	Single Target	30	3	100	21	44 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal earth-type magic damage.
Thwack	None	Physical	AoE	12	4	100	12	—	At HP at least 50%, six-action cycle First action below 50% HP	—
Rabid Claw	None	Physical	Single Target	30	1	100	25	—	At HP at least 50%, six-action cycle First action below 50% HP	Damage with Berserk and Confusion.

Traits & Passives

Elemental weakness changes.

Double Action (unlimited)
Allows two actions.

Research Notes

These patterns were checked against the installed game’s AI.

How the patterns were checked · Detailed source notes

Variant source data

Stored base stats. Encounter effects may modify these values. Battle-group references do not establish demo availability.

{
  "unitId": 448,
  "table": "DT_UnitParameter",
  "row": "アルケオエイビス",
  "offset": 195073,
  "faceIconId": 448,
  "dropNormalRate": 12,
  "dropRareRate": 30,
  "stealRate": 5,
  "battleGroups": [
    9075
  ]
}

LEVEL 40 · BOSS

HP: 130,000
MP: 100
Stagger: 1,300
Strength: 560
Stamina: 350
Magic: 560
Spirit: 350
Speed: 300

14,500 EXP · 12,000 gil

Plan your approach

Recorded elemental weaknesses: Water

Match your attack to this variant’s resistance. Stored stats and move lists do not establish an exact turn order, a guaranteed status infliction, or demo availability.

Test damage assumptions · Compare complete builds

Element resistance

Fire50%

Ice50%

Wind50%

Earth50%

Lightning50%

Water−50%

Light0%

Dark0%

Status resistance

Poison100%

Blind80%

Sleep100%

Silence80%

Paralysis80%

Confusion100%

Petrify100%

Charm100%

Berserk100%

Doom—

Slow30%

Strength down30%

Stamina down30%

Magic down30%

Spirit down30%

Instant death100%

Gravity100%

0% neutral · Negative: more damage · 100%: immune · 200%: absorbs. Status percentages are resistance, not infliction chances.

Drops

NormalNone

RareNone

Steals

NormalNone

RareNone

Drop percentages are base chances before bonuses. Steal slot probabilities are still being verified.

Attack Pattern

Repeats a six-action cycle, shortening the cycle below half HP; Archaeoaevis’s barrier change randomly selects one of six forms.

Numbers count this boss’s own actions; combos are listed together. Battle-turn rules are labeled.

When	Action
At HP at least 50%, six-action cycle	Use Fira (40%) or Firaga (60%); Archaeoaevis’s barrier attack; Fira (40%) or Firaga (60%); Thwack (70%) or Rabid Claw (30%); Fira (40%) or Firaga (60%); Barrier Shift. Repeat.
Second attack in the opening pattern	Use Barrier Shift before Archaeoaevis’s first barrier change. After that, use Rend (about 33%) or Flatten (50%) or Constrict (about 17%).
First action below 50% HP	Restart with this shorter pattern: Fira (40%) or Firaga (60%); Thwack (70%) or Rabid Claw (30%); Fira (40%) or Firaga (60%); Barrier Shift.
Whenever Archaeoaevis uses Barrier Shift	Randomly use one of Archaeoaevis’s six barriers.

Combat Actions


Hack	None	Physical	Single Target	12	1	100	25	—	Listed as the replacement attack when Silence prevents a spell.	—
Rend	None	Physical	Single Target	18	1	100	25	—	Second attack in the opening pattern	—
Flatten	None	Physical	Single Target	18	2	100	25	—	Second attack in the opening pattern	—
Constrict	None	—	Single Target	—	—	—	—	—	Second attack in the opening pattern	Effects: Automatic Skill. Open the ability for details.
Barrier Shift	None	—	Self	—	—	—	—	—	At HP at least 50%, six-action cycle Second attack in the opening pattern 1 more First action below 50% HP	—
Fira	Fire	Magic	AoE	18	2	100	14	15 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal fire-type magic damage.
Firaga	Fire	Magic	Single Target	30	3	100	21	44 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal fire-type magic damage.
Thwack	None	Physical	AoE	12	4	100	12	—	At HP at least 50%, six-action cycle First action below 50% HP	—
Rabid Claw	None	Physical	Single Target	30	1	100	25	—	At HP at least 50%, six-action cycle First action below 50% HP	Damage with Berserk and Confusion.

Traits & Passives

Elemental weakness changes.

Research Notes

These patterns were checked against the installed game’s AI.

How the patterns were checked · Detailed source notes

Variant source data

Stored base stats. Encounter effects may modify these values. Battle-group references do not establish demo availability.

{
  "unitId": 2080,
  "table": "DT_UnitParameter",
  "row": "アルケオエイビス(火）",
  "offset": 333219,
  "faceIconId": 448,
  "dropNormalRate": 12,
  "dropRareRate": 30,
  "stealRate": 5,
  "battleGroups": []
}

LEVEL 40 · BOSS

HP: 130,000
MP: 100
Stagger: 1,300
Strength: 560
Stamina: 350
Magic: 560
Spirit: 350
Speed: 300

14,500 EXP · 12,000 gil

Plan your approach

Recorded elemental weaknesses: Fire

Match your attack to this variant’s resistance. Stored stats and move lists do not establish an exact turn order, a guaranteed status infliction, or demo availability.

Test damage assumptions · Compare complete builds

Element resistance

Fire−50%

Ice50%

Wind50%

Earth50%

Lightning50%

Water50%

Light0%

Dark0%

Status resistance

Poison100%

Blind80%

Sleep100%

Silence80%

Paralysis80%

Confusion100%

Petrify100%

Charm100%

Berserk100%

Doom—

Slow30%

Strength down30%

Stamina down30%

Magic down30%

Spirit down30%

Instant death100%

Gravity100%

0% neutral · Negative: more damage · 100%: immune · 200%: absorbs. Status percentages are resistance, not infliction chances.

Drops

NormalNone

RareNone

Steals

NormalNone

RareNone

Drop percentages are base chances before bonuses. Steal slot probabilities are still being verified.

Attack Pattern

Repeats a six-action cycle, shortening the cycle below half HP; Archaeoaevis’s barrier change randomly selects one of six forms.

Numbers count this boss’s own actions; combos are listed together. Battle-turn rules are labeled.

When	Action
At HP at least 50%, six-action cycle	Use Blizzara (40%) or Blizzaga (60%); Archaeoaevis’s barrier attack; Blizzara (40%) or Blizzaga (60%); Thwack (70%) or Rabid Claw (30%); Blizzara (40%) or Blizzaga (60%); Barrier Shift. Repeat.
Second attack in the opening pattern	Use Barrier Shift before Archaeoaevis’s first barrier change. After that, use Rend (about 33%) or Flatten (50%) or Constrict (about 17%).
First action below 50% HP	Restart with this shorter pattern: Blizzara (40%) or Blizzaga (60%); Thwack (70%) or Rabid Claw (30%); Blizzara (40%) or Blizzaga (60%); Barrier Shift.
Whenever Archaeoaevis uses Barrier Shift	Randomly use one of Archaeoaevis’s six barriers.

Combat Actions


Hack	None	Physical	Single Target	12	1	100	25	—	Listed as the replacement attack when Silence prevents a spell.	—
Rend	None	Physical	Single Target	18	1	100	25	—	Second attack in the opening pattern	—
Flatten	None	Physical	Single Target	18	2	100	25	—	Second attack in the opening pattern	—
Constrict	None	—	Single Target	—	—	—	—	—	Second attack in the opening pattern	Effects: Automatic Skill. Open the ability for details.
Barrier Shift	None	—	Self	—	—	—	—	—	At HP at least 50%, six-action cycle Second attack in the opening pattern 1 more First action below 50% HP	—
Blizzara	Ice	Magic	AoE	18	2	100	14	15 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal ice-type magic damage.
Blizzaga	Ice	Magic	Single Target	30	3	100	21	44 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal ice-type magic damage.
Thwack	None	Physical	AoE	12	4	100	12	—	At HP at least 50%, six-action cycle First action below 50% HP	—
Rabid Claw	None	Physical	Single Target	30	1	100	25	—	At HP at least 50%, six-action cycle First action below 50% HP	Damage with Berserk and Confusion.

Traits & Passives

Elemental weakness changes.

Research Notes

These patterns were checked against the installed game’s AI.

How the patterns were checked · Detailed source notes

Variant source data

Stored base stats. Encounter effects may modify these values. Battle-group references do not establish demo availability.

{
  "unitId": 2081,
  "table": "DT_UnitParameter",
  "row": "アルケオエイビス(氷）",
  "offset": 333809,
  "faceIconId": 448,
  "dropNormalRate": 12,
  "dropRareRate": 30,
  "stealRate": 5,
  "battleGroups": []
}

LEVEL 40 · BOSS

HP: 130,000
MP: 100
Stagger: 1,300
Strength: 560
Stamina: 350
Magic: 560
Spirit: 350
Speed: 300

14,500 EXP · 12,000 gil

Plan your approach

Recorded elemental weaknesses: Ice

Match your attack to this variant’s resistance. Stored stats and move lists do not establish an exact turn order, a guaranteed status infliction, or demo availability.

Test damage assumptions · Compare complete builds

Element resistance

Fire50%

Ice−50%

Wind50%

Earth50%

Lightning50%

Water50%

Light0%

Dark0%

Status resistance

Poison100%

Blind80%

Sleep100%

Silence80%

Paralysis80%

Confusion100%

Petrify100%

Charm100%

Berserk100%

Doom—

Slow30%

Strength down30%

Stamina down30%

Magic down30%

Spirit down30%

Instant death100%

Gravity100%

0% neutral · Negative: more damage · 100%: immune · 200%: absorbs. Status percentages are resistance, not infliction chances.

Drops

NormalNone

RareNone

Steals

NormalNone

RareNone

Drop percentages are base chances before bonuses. Steal slot probabilities are still being verified.

Attack Pattern

Repeats a six-action cycle, shortening the cycle below half HP; Archaeoaevis’s barrier change randomly selects one of six forms.

Numbers count this boss’s own actions; combos are listed together. Battle-turn rules are labeled.

When	Action
At HP at least 50%, six-action cycle	Use Aerora (40%) or Aeroga (60%); Archaeoaevis’s barrier attack; Aerora (40%) or Aeroga (60%); Thwack (70%) or Rabid Claw (30%); Aerora (40%) or Aeroga (60%); Barrier Shift. Repeat.
Second attack in the opening pattern	Use Barrier Shift before Archaeoaevis’s first barrier change. After that, use Rend (about 33%) or Flatten (50%) or Constrict (about 17%).
First action below 50% HP	Restart with this shorter pattern: Aerora (40%) or Aeroga (60%); Thwack (70%) or Rabid Claw (30%); Aerora (40%) or Aeroga (60%); Barrier Shift.
Whenever Archaeoaevis uses Barrier Shift	Randomly use one of Archaeoaevis’s six barriers.

Combat Actions


Hack	None	Physical	Single Target	12	1	100	25	—	Listed as the replacement attack when Silence prevents a spell.	—
Rend	None	Physical	Single Target	18	1	100	25	—	Second attack in the opening pattern	—
Flatten	None	Physical	Single Target	18	2	100	25	—	Second attack in the opening pattern	—
Constrict	None	—	Single Target	—	—	—	—	—	Second attack in the opening pattern	Effects: Automatic Skill. Open the ability for details.
Barrier Shift	None	—	Self	—	—	—	—	—	At HP at least 50%, six-action cycle Second attack in the opening pattern 1 more First action below 50% HP	—
Aerora	Wind	Magic	AoE	18	2	100	14	15 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal wind-type magic damage.
Aeroga	Wind	Magic	Single Target	30	3	100	21	44 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal wind-type magic damage.
Thwack	None	Physical	AoE	12	4	100	12	—	At HP at least 50%, six-action cycle First action below 50% HP	—
Rabid Claw	None	Physical	Single Target	30	1	100	25	—	At HP at least 50%, six-action cycle First action below 50% HP	Damage with Berserk and Confusion.

Traits & Passives

Elemental weakness changes.

Research Notes

These patterns were checked against the installed game’s AI.

How the patterns were checked · Detailed source notes

Variant source data

Stored base stats. Encounter effects may modify these values. Battle-group references do not establish demo availability.

{
  "unitId": 2082,
  "table": "DT_UnitParameter",
  "row": "アルケオエイビス(風）",
  "offset": 334399,
  "faceIconId": 448,
  "dropNormalRate": 12,
  "dropRareRate": 30,
  "stealRate": 5,
  "battleGroups": []
}

LEVEL 40 · BOSS

HP: 130,000
MP: 100
Stagger: 1,300
Strength: 560
Stamina: 350
Magic: 560
Spirit: 350
Speed: 300

14,500 EXP · 12,000 gil

Plan your approach

Recorded elemental weaknesses: Wind

Match your attack to this variant’s resistance. Stored stats and move lists do not establish an exact turn order, a guaranteed status infliction, or demo availability.

Test damage assumptions · Compare complete builds

Element resistance

Fire50%

Ice50%

Wind−50%

Earth50%

Lightning50%

Water50%

Light0%

Dark0%

Status resistance

Poison100%

Blind80%

Sleep100%

Silence80%

Paralysis80%

Confusion100%

Petrify100%

Charm100%

Berserk100%

Doom—

Slow30%

Strength down30%

Stamina down30%

Magic down30%

Spirit down30%

Instant death100%

Gravity100%

0% neutral · Negative: more damage · 100%: immune · 200%: absorbs. Status percentages are resistance, not infliction chances.

Drops

NormalNone

RareNone

Steals

NormalNone

RareNone

Drop percentages are base chances before bonuses. Steal slot probabilities are still being verified.

Attack Pattern

Repeats a six-action cycle, shortening the cycle below half HP; Archaeoaevis’s barrier change randomly selects one of six forms.

Numbers count this boss’s own actions; combos are listed together. Battle-turn rules are labeled.

When	Action
At HP at least 50%, six-action cycle	Use Stonera (40%) or Stonega (60%); Archaeoaevis’s barrier attack; Stonera (40%) or Stonega (60%); Thwack (70%) or Rabid Claw (30%); Stonera (40%) or Stonega (60%); Barrier Shift. Repeat.
Second attack in the opening pattern	Use Barrier Shift before Archaeoaevis’s first barrier change. After that, use Rend (about 33%) or Flatten (50%) or Constrict (about 17%).
First action below 50% HP	Restart with this shorter pattern: Stonera (40%) or Stonega (60%); Thwack (70%) or Rabid Claw (30%); Stonera (40%) or Stonega (60%); Barrier Shift.
Whenever Archaeoaevis uses Barrier Shift	Randomly use one of Archaeoaevis’s six barriers.

Combat Actions


Hack	None	Physical	Single Target	12	1	100	25	—	Listed as the replacement attack when Silence prevents a spell.	—
Rend	None	Physical	Single Target	18	1	100	25	—	Second attack in the opening pattern	—
Flatten	None	Physical	Single Target	18	2	100	25	—	Second attack in the opening pattern	—
Constrict	None	—	Single Target	—	—	—	—	—	Second attack in the opening pattern	Effects: Automatic Skill. Open the ability for details.
Barrier Shift	None	—	Self	—	—	—	—	—	At HP at least 50%, six-action cycle Second attack in the opening pattern 1 more First action below 50% HP	—
Stonera	Earth	Magic	AoE	18	2	100	14	15 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal earth-type magic damage.
Stonega	Earth	Magic	Single Target	30	3	100	21	44 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal earth-type magic damage.
Thwack	None	Physical	AoE	12	4	100	12	—	At HP at least 50%, six-action cycle First action below 50% HP	—
Rabid Claw	None	Physical	Single Target	30	1	100	25	—	At HP at least 50%, six-action cycle First action below 50% HP	Damage with Berserk and Confusion.

Traits & Passives

Elemental weakness changes.

Research Notes

These patterns were checked against the installed game’s AI.

How the patterns were checked · Detailed source notes

Variant source data

Stored base stats. Encounter effects may modify these values. Battle-group references do not establish demo availability.

{
  "unitId": 2083,
  "table": "DT_UnitParameter",
  "row": "アルケオエイビス(土）",
  "offset": 334989,
  "faceIconId": 448,
  "dropNormalRate": 12,
  "dropRareRate": 30,
  "stealRate": 5,
  "battleGroups": []
}

LEVEL 40 · BOSS

HP: 130,000
MP: 100
Stagger: 1,300
Strength: 560
Stamina: 350
Magic: 560
Spirit: 350
Speed: 300

14,500 EXP · 12,000 gil

Plan your approach

Recorded elemental weaknesses: Earth

Match your attack to this variant’s resistance. Stored stats and move lists do not establish an exact turn order, a guaranteed status infliction, or demo availability.

Test damage assumptions · Compare complete builds

Element resistance

Fire50%

Ice50%

Wind50%

Earth−50%

Lightning50%

Water50%

Light0%

Dark0%

Status resistance

Poison100%

Blind80%

Sleep100%

Silence80%

Paralysis80%

Confusion100%

Petrify100%

Charm100%

Berserk100%

Doom—

Slow30%

Strength down30%

Stamina down30%

Magic down30%

Spirit down30%

Instant death100%

Gravity100%

0% neutral · Negative: more damage · 100%: immune · 200%: absorbs. Status percentages are resistance, not infliction chances.

Drops

NormalNone

RareNone

Steals

NormalNone

RareNone

Drop percentages are base chances before bonuses. Steal slot probabilities are still being verified.

Attack Pattern

Repeats a six-action cycle, shortening the cycle below half HP; Archaeoaevis’s barrier change randomly selects one of six forms.

Numbers count this boss’s own actions; combos are listed together. Battle-turn rules are labeled.

When	Action
At HP at least 50%, six-action cycle	Use Thundara (40%) or Thundaga (60%); Archaeoaevis’s barrier attack; Thundara (40%) or Thundaga (60%); Thwack (70%) or Rabid Claw (30%); Thundara (40%) or Thundaga (60%); Barrier Shift. Repeat.
Second attack in the opening pattern	Use Barrier Shift before Archaeoaevis’s first barrier change. After that, use Rend (about 33%) or Flatten (50%) or Constrict (about 17%).
First action below 50% HP	Restart with this shorter pattern: Thundara (40%) or Thundaga (60%); Thwack (70%) or Rabid Claw (30%); Thundara (40%) or Thundaga (60%); Barrier Shift.
Whenever Archaeoaevis uses Barrier Shift	Randomly use one of Archaeoaevis’s six barriers.

Combat Actions


Hack	None	Physical	Single Target	12	1	100	25	—	Listed as the replacement attack when Silence prevents a spell.	—
Rend	None	Physical	Single Target	18	1	100	25	—	Second attack in the opening pattern	—
Flatten	None	Physical	Single Target	18	2	100	25	—	Second attack in the opening pattern	—
Constrict	None	—	Single Target	—	—	—	—	—	Second attack in the opening pattern	Effects: Automatic Skill. Open the ability for details.
Barrier Shift	None	—	Self	—	—	—	—	—	At HP at least 50%, six-action cycle Second attack in the opening pattern 1 more First action below 50% HP	—
Thundara	Lightning	Magic	AoE	18	2	100	14	15 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal lightning-type magic damage.
Thundaga	Lightning	Magic	Single Target	30	3	100	21	44 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal lightning-type magic damage.
Thwack	None	Physical	AoE	12	4	100	12	—	At HP at least 50%, six-action cycle First action below 50% HP	—
Rabid Claw	None	Physical	Single Target	30	1	100	25	—	At HP at least 50%, six-action cycle First action below 50% HP	Damage with Berserk and Confusion.

Traits & Passives

Elemental weakness changes.

Research Notes

These patterns were checked against the installed game’s AI.

How the patterns were checked · Detailed source notes

Variant source data

Stored base stats. Encounter effects may modify these values. Battle-group references do not establish demo availability.

{
  "unitId": 2084,
  "table": "DT_UnitParameter",
  "row": "アルケオエイビス(雷）",
  "offset": 335579,
  "faceIconId": 448,
  "dropNormalRate": 12,
  "dropRareRate": 30,
  "stealRate": 5,
  "battleGroups": []
}

LEVEL 40 · BOSS

HP: 130,000
MP: 100
Stagger: 1,300
Strength: 560
Stamina: 350
Magic: 560
Spirit: 350
Speed: 300

14,500 EXP · 12,000 gil

Plan your approach

Recorded elemental weaknesses: Lightning

Match your attack to this variant’s resistance. Stored stats and move lists do not establish an exact turn order, a guaranteed status infliction, or demo availability.

Test damage assumptions · Compare complete builds

Element resistance

Fire50%

Ice50%

Wind50%

Earth50%

Lightning−50%

Water50%

Light0%

Dark0%

Status resistance

Poison100%

Blind80%

Sleep100%

Silence80%

Paralysis80%

Confusion100%

Petrify100%

Charm100%

Berserk100%

Doom—

Slow30%

Strength down30%

Stamina down30%

Magic down30%

Spirit down30%

Instant death100%

Gravity100%

0% neutral · Negative: more damage · 100%: immune · 200%: absorbs. Status percentages are resistance, not infliction chances.

Drops

NormalNone

RareNone

Steals

NormalNone

RareNone

Drop percentages are base chances before bonuses. Steal slot probabilities are still being verified.

Attack Pattern

Repeats a six-action cycle, shortening the cycle below half HP; Archaeoaevis’s barrier change randomly selects one of six forms.

Numbers count this boss’s own actions; combos are listed together. Battle-turn rules are labeled.

When	Action
At HP at least 50%, six-action cycle	Use Watera (40%) or Waterga (60%); Archaeoaevis’s barrier attack; Watera (40%) or Waterga (60%); Thwack (70%) or Rabid Claw (30%); Watera (40%) or Waterga (60%); Barrier Shift. Repeat.
Second attack in the opening pattern	Use Barrier Shift before Archaeoaevis’s first barrier change. After that, use Rend (about 33%) or Flatten (50%) or Constrict (about 17%).
First action below 50% HP	Restart with this shorter pattern: Watera (40%) or Waterga (60%); Thwack (70%) or Rabid Claw (30%); Watera (40%) or Waterga (60%); Barrier Shift.
Whenever Archaeoaevis uses Barrier Shift	Randomly use one of Archaeoaevis’s six barriers.

Combat Actions


Hack	None	Physical	Single Target	12	1	100	25	—	Listed as the replacement attack when Silence prevents a spell.	—
Rend	None	Physical	Single Target	18	1	100	25	—	Second attack in the opening pattern	—
Flatten	None	Physical	Single Target	18	2	100	25	—	Second attack in the opening pattern	—
Constrict	None	—	Single Target	—	—	—	—	—	Second attack in the opening pattern	Effects: Automatic Skill. Open the ability for details.
Barrier Shift	None	—	Self	—	—	—	—	—	At HP at least 50%, six-action cycle Second attack in the opening pattern 1 more First action below 50% HP	—
Watera	Water	Magic	AoE	18	2	100	14	15 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal water-type magic damage.
Waterga	Water	Magic	Single Target	30	3	100	21	44 MP	At HP at least 50%, six-action cycle First action below 50% HP	Deal water-type magic damage.
Thwack	None	Physical	AoE	12	4	100	12	—	At HP at least 50%, six-action cycle First action below 50% HP	—
Rabid Claw	None	Physical	Single Target	30	1	100	25	—	At HP at least 50%, six-action cycle First action below 50% HP	Damage with Berserk and Confusion.

Traits & Passives

Elemental weakness changes.

Research Notes

These patterns were checked against the installed game’s AI.

How the patterns were checked · Detailed source notes

Variant source data

Stored base stats. Encounter effects may modify these values. Battle-group references do not establish demo availability.

{
  "unitId": 2085,
  "table": "DT_UnitParameter",
  "row": "アルケオエイビス(水）",
  "offset": 336169,
  "faceIconId": 448,
  "dropNormalRate": 12,
  "dropRareRate": 30,
  "stealRate": 5,
  "battleGroups": []
}