Boost Element Defence I is a level 1 passive skill in AION Classic 1.9. The Chanter learns it at level 10.

Learned by

Class	Faction	Character level	Skill level
Chanter	Both factions	10	1
Templar	Both factions	22	1

Taught by

Item	Skill level
Boost Element Defence ITemplar, Lv 22
Boost Element Defence IChanter, Lv 10