Heart Gore.

Assassin active mastery skill, unlocked at level 4.

Global · 19 Sept 2026

What it does

Triggers on landing a Critical Hit, dealing 111 damage to up to 4 enemies within 4m and restores 100 MP. 5 Stagger Gauge Damage

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

Specialisations

3 slots

From level	Effect
8	Absorbs 0.7% HP
8	Engraves 1 Insignia for 10s on hit
8	Up to +20% Critical Hit when less targets hit
12	Multi-Hit on hit
16	Resets [Heart Gore] cooldown on landing a Critical Hit

Point cost

21 points in total

Skill level	Points	Character level
1	0	4
2	1	4
3	1	7
4	1	10
5	2	13
6	2	16
7	2	19
8	4	22
9	4	25
10	4	28

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 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 Infiltrate Active · level 10

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.