Shadow Fall.

Assassin active mastery skill, unlocked at level 12.

Global · 19 Sept 2026

What it does

Moves to a target afflicted with Stun within 10m and deals 465 damage and inflicts Knockdown for 3000. Has a 13220038% chance to trigger on attacking a target with Incapacitated Immunity. 10 Stagger Gauge Damage

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

Specialisations

3 slots

From level	Effect
8	Absorbs 10% HP
8	Engraves 3 Insignias for 10s on hit
8	-5s cooldown
12	+1s Knockdown duration
16	Can be used on targets afflicted with Blind

Point cost

21 points in total

Skill level	Points	Character level
1	0	12
2	1	12
3	1	15
4	1	18
5	2	21
6	2	24
7	2	27
8	4	30
9	4	33
10	4	36

More Assassin skills

All

Quick Slice Active · level 1 Savage Roar Active · level 1 Shadowstrike Active · level 1 Heightened Sixth Sense Passive · level 1 Dodge Active · level 1 Ambush Active · level 3 Heart Gore Active · level 4 Storm Rampage Active · level 5 Exploit Weakness Passive · level 6 Whirlwind Slice Active · level 7 Flash Slice Active · level 8 Apply Poison 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.