Corrode.

Spiritmaster passive mastery skill, unlocked at level 11.

Global · 19 Sept 2026

What it does

Increases the caster's Critical Hit by Critical and has a 16740001% chance to deal 95 damage on landing a Critical Hit. Cooldown: 1s

Text from the KR/TW client; Global numbers may differ.

Stat effects

Level 2 and 40

Stat	Level 2	Level 40
Critical Hit	110	490

Point cost

21 points in total

Skill level	Points	Character level
1	0	11
2	1	11
3	1	14
4	1	17
5	2	20
6	2	23
7	2	26
8	4	29
9	4	32
10	4	35

More Spiritmaster skills

All

Cold Shock Active · level 1 Combustion Active · level 1 Summon: Fire Spirit Active · level 1 Spirit Strike Passive · level 1 Dodge Active · level 1 Summon: Water Spirit Active · level 3 Jointstrike: Curse Active · level 4 Rapid Scattershot Active · level 5 Spirit Protection Passive · level 6 Summon: Earth Spirit Active · level 7 Dimensional Control Active · level 8 Spirit's Descent Passive · level 9

Data from the Global client build of 19 Sept 2026 ; skill descriptions come from the KR/TW client, so a number inside one can differ on the Global servers — the tables above are Global values . Snapshot taken 30 Sept 2026. AtreiaLegend is an unofficial fan site, not affiliated with or endorsed by NCSOFT. AION and all related content are trademarks of NCSOFT Corporation.