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 main target has 50%+ HP, Atk Weight +1;

If main target has 75%+ HP, additional Atk Weight +1

ⅠOn Hit Inflict +3/3 and +5 and +7 Count

[Heads Hit] Inflict 2 next turn

[Heads Hit/On Hit] Trigger

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

Targets randomly

Before Attack If main target has 50%+ HP, Atk Weight +1;

If main target has 75%+ HP, additional Atk Weight +1

ⅠOn Hit Heal 30% of damage dealt

On Hit Trigger

On Hit Inflict 3/5

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 (2 times per turn)

SYNERGYTeams and Synergies

KEYWORDSEffect Glossary

Bind
Speed decreases by the effect’s Count for one turn.
Tremor
When attacked by skills that trigger Tremor Burst, raise the Stagger Threshold by the effect’s Potency. At the end of the turn, reduce the Count by 1.
Tremor Burst
Raise target's Stagger Threshold by Tremor Potency on target
Defense Level Down
Defense Level decreases based on the effect's Potency for one turn.