English translation in progress. Untranslated passages remain in Japanese.

E.G.O 1006 · ZAYIN

Cavernous Wailing

SinclairGloomBlubbering Toad

Risk Level: ZAYIN
SP Cost: 15/15/23
Resource Cost: Lust ×1Sloth ×2Gloom ×3E.G.O usable with these resources →
Resistance: ×1×1×1×2×0.75×1×2

GUIDEMechanics and How to Use

At a Glance

A multi-target Gloom Blunt defensive E.G.O that gives Shield and Blubberbubble to himself and a low-HP ally after attacking, returning Sinking when the Shield is broken.

Core Mechanics

Shield and Blubberbubble: After the attack, gives himself and the 1 ally with the lowest current HP Shield equal to 10% of his max HP (14% at Threadspin Ⅲ, 20% at Ⅳ) and 2 Blubberbubble. It is applied after the attack, so with a slow Identity it does not arrive in time to defend that same turn.
Blubberbubble's effect: While it lasts, the Shield does not expire at Turn End. When Shield with Blubberbubble is broken, the attacker receives a total of 4 Sinking.
Expansion through Resonance: +1 Attack Weight if the highest Resonance is 4 or more (at Threadspin Ⅲ, Resonance − 2, up to 2, with the number of target allies increasing by the same amount). With a highest Gloom Absolute Resonance of 4 or more, Blubberbubble becomes 3.
Passive — Tear Film: At Turn Start, gains 1 Protection if he has Shield, plus 1 more if he also has Blubberbubble.
Corrosion skill: Only he receives the buffs, and his Aggro increases next turn. It also inflicts Sinking on hit.

How to Use

You want to use it first to protect allies, so fire it with a fast Identity.
From Threadspin Ⅲ, building Resonance increases the number of targets, spreading the Shield and Sinking to multiple allies.
The Shield amount is based on Sinclair's max HP.
It requires 1 Lust, 2 Sloth, and 3 Gloom. As a ZAYIN, equipping it sets his Sin resistances at Combat Start to this E.G.O's (Fatal to Gluttony and Envy).

A practical guide based on the skill and passive descriptions below.(Updated: 2026-10-18)

ANALYSISThreadspin

Ⅱ: Unlocks Tear Film.
Ⅲ: The Shield becomes 14%, and targets and Attack Weight increase with Resonance. Corrosion's Shield and Aggro also increase.
Ⅳ: The Shield becomes 20%. Corrosion's Sinking Count becomes 3, and at 4 or more Gloom Resonance, an extra Shield is added.

SKILLSSkill

Awakening

Awakening skill

Blunt

Clash Power: 16~24
Base Power: 16
Coin Power: +8
No. of Coins: 1
Skill Level: Identity Lv-2
Attack Weight: 1

Before Attack At 4+ highest Reson., Atk Weight +1/Before Attack Gain (highest Reson. - 2) Atk Weight (max 2)

Ⅰ[Attack End] Apply 10% of this unit's max HP as Shield to self and 1 other ally with the least current HP, and apply 2 as well/〘Ⅲ:[Attack End] Apply 14% of this unit's max HP as Shield to self and (1 + (highest Reson. - 2)) allies with the least current HP, and apply 2 as well

(max # of other allies that gain : 3)〙/〘Ⅳ:[Attack End] Apply 20% of this unit's max HP as Shield to self and (1 + (highest Reson. - 2)) allies with the least current HP, and apply 2 as well

(max # of other allies that gain : 3)〙

- At 4+ highest Reson., apply it to 1 more ally/None

- If the affected unit already has , change the value to 2

- At 4+ highest Gloom A-Reson., this Skill's above effects change to 'apply 3 ' and 'change the value to 3' instead.

Corrosion

Corrosion skill

Pierce

Clash Power: 16~24
Base Power: 24
Coin Power: -8
No. of Coins: 1
Skill Level: Identity Lv+0
Attack Weight: 1

Indiscriminate

Targets Randomly

Before Attack At 4+ highest Reson., Atk Weight +1/Before Attack Gain (highest Reson. - 2) Atk Weight (max 2)

Before Attack Gain +5/+10 to this Skill Slot next turn

ⅠOn Hit Inflict 2 and +3 Count

[Attack End] Gain (15/18/20 + 2.5/3/5(highest Reson.))% of this unit's max HP as Shield to self and gain 2 . (max 25%/30%/40%)

- If this unit already has , change the value to 2

- At 4+ highest Gloom A-Reson., this Skill's above effects change to 'gain 3 ' and 'change the value to 3' instead./- At 4+ highest Gloom A-Reson., this Skill's above effects change to 'apply 3 ' and 'change the value to 3' instead.

- At 4+ Gloom Reson., gain additional Shield equal to 10% of this unit's max HP

Normal Coin Unbreakable CoinThreadspin Ⅲ Threadspin Ⅳ mark additions or changes at those Threadspin tiers. Multiple values represent different tiers; the larger value is for the highest tier.

PASSIVEE.G.O Passives

E.G.O Passives

Tear Film

Turn Start: If this unit has Shield, gain 1

If this unit is under 's effect, gain 1 additional

SYNERGYTeams and Synergies

Zwei Assoc. West Section 3: S1 (Lust), S2 (Gloom), and S3 (Sloth) cover the required affinities, and he serves as a tank who takes hits with Guard.
The House of Spiders: The Pinky Apprentice: His Defense skill Swerve grants Shield equal to Moonlit Azure Blade, which Blubberbubble can likely carry over.

KEYWORDSEffect Glossary

Blubberbubble: - This effect counts as a 'Shield Management' effect. - Turn End: Reduce Count by 1 - This unit does not lose Shield at Turn End as long as it has the Blubberbubble effect (unless depleted by damage or effect) - If the Shield affected by Blubberbubble breaks due to taking damage, inflict 4 Sinking Potency/Count against the attacker. (How much of that '4' value is Potency or Count is randomly determined) - This unit can stack their Shield value by using this effect. However, as long as Blubberbubble is in effect, the Shield value cannot exceed 60% of this unit's Max HP.
Dejection: - Low Morale - In a clash, if any Coin lands tails, Clash Power -1 for the clash
Sinking: When hit by an attack, take fixed SP damage by the effect’s Potency. (Non-SP Units take Gloom damage instead.) Then, reduce its Count by 1.
Aggro: In focused encounters, slots with higher Aggro values are more likely to be targeted by enemies.
Protection: Take less damage from skills based on the effect’s Count for one turn. (Max 10)