English translation in progress. Untranslated passages remain in Japanese.

Effervescent Corrosion Rodion E.G.O artwork

E.G.O 0904 · TETH

Effervescent Corrosion

RodionGluttonyAmbling PearlS3 Premium Pass Lv70
Risk Level
TETH
SP Cost
20/20/30
Resource Cost
Sloth ×2Gloom ×2Pride ×2E.G.O usable with these resources →
Resistance
×1×2×1×0.5×1×1×2

GUIDEMechanics and How to Use

At a Glance

A Gluttony Blunt E.G.O that inflicts heavy Tremor across multiple high-HP enemies and shifts Stagger Thresholds with Tremor Burst.

Core Mechanics

  • Inflicting Tremor: Inflicts 3 Tremor Count on hit (5 at Threadspin Ⅲ, 7 at Ⅳ). From Threadspin Ⅲ, it also adds 3 Tremor Potency.
  • Tremor Burst: From Threadspin Ⅲ it triggers on Heads Hit, and at Ⅳ on hit, making it less dependent on Coin results.
  • Attack Weight increase: Base 2. From Threadspin Ⅲ, +1 if the target's HP is 50% or more of its max, and at Ⅳ, +1 more at 75% or more (up to 4). Firing it at the start spreads Tremor widely.
  • Bind: Inflicts 2 Bind next turn on Heads Hit. The passive Sticky Filth inflicts 1 Bind on Heads Hit with Pierce skills, up to 2 times per turn.
  • Corrosion skill: Becomes Pierce with no Tremor infliction, healing HP equal to 30% of damage dealt and (from Threadspin Ⅲ) inflicting Defense Level Down. It cannot distinguish friend from foe and can hit allies. It is a different skill from Awakening.

How to Use

  • Fire it right after the battle starts, while enemy HP is high, to increase Attack Weight.
  • Pair it with Tremor Identities, taking on the role of building Tremor Potency and Count before Tremor Burst.
  • Its resources are a light 2 Sloth, 2 Gloom, and 2 Pride, with a Sanity cost of 20.

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

ANALYSISThreadspin

  • Ⅱ: Unlocks Sticky Filth.
  • Ⅲ: Adds 3 Tremor Potency, 5 Count, the Attack Weight increase (50% or more), and Tremor Burst on Heads Hit. Its Tremor infliction is mostly sufficient here.
  • Ⅳ: 7 Tremor Count, the Attack Weight increase (75% or more), and Tremor Burst on hit improve usability.

SKILLSSkill

Awakening

Awakening skill

BluntBlunt
Clash Power
20~25
Base Power
20
Coin Power
+5
No. of Coins
1
Skill Level
Identity Lv+1
Attack Weight
2

Before Attack If the main target has 50% of Max HP or more, Attack Weight +1

If at 75% of Max HP or more, gain another +1 Attack Weight

ⅠOn Hit Inflict 3 and 3/5/7 Count

On Heads Hit Inflict 2 next turn

[On Heads Hit/On Hit]

Corrosion

Corrosion skill

PiercePierce
Clash Power
17~27
Base Power
27
Coin Power
-10
No. of Coins
1
Skill Level
Identity Lv+1
Attack Weight
2

Indiscriminate Attack random targets

Before Attack If the main target has 50% of Max HP or more, Attack Weight +1

If at 75% of Max HP or more, gain another +1 Attack Weight

ⅠOn Hit Heal this unit for 30% of damage dealt

On Hit Inflict 3/5

On Hit

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

Sticky Filth

On Heads Hit with a Pierce skill, inflict 1 (max 2 times per 1 turn)

※Unlocked at Threadspin Ⅱ; active from the turn after E.G.O use until the end of battle

SYNERGYTeams and Synergies

KEYWORDSEffect Glossary

Tremor
When taking damage from a skill that triggers Tremor Burst, raise the Stagger Threshold by the Potency. At Turn End, reduce Count by 1.
Bind
For 1 turn, decrease Speed by the value.
Tremor Burst
Raise the target's Stagger Threshold by their Tremor Potency.
Defense Level Down
For 1 turn, decrease Defense Level proportional to the value.