Surprise Attack IV is a level 4 active skill in AION Classic 1.9. The Ranger and the Assassin learn it from level 37.

Learned by

Class	Faction	Character level	Skill level
RangerAssassin	Both factions	37–45	1–9

Taught by

Item	Skill level
Surprise Attack IVRanger, Lv 37
Surprise Attack IVAssassin, Lv 37