[1.2.314] Battlemage Job

I'm fairly sure (not 100% that 42 damage per sec is from Advanced Dark Aura

어드밴스드 다크 오라 (Advanced Dark Aura)
Description: 다크 오라의 기능을 강화시킨다. 추가로 주위 적들에게 지속적으로 데미지를 준다.\n필요 스킬 : #c다크 오라 20레벨 이상# (Further increases the Dark Aura's abilities by adding more damage)

Last: MP 60 소비, 데미지 20% 강화, 기본 공격력 100

Google Translation:

Advanced Dark Aura (Advanced Dark Aura)
Description: Dark Aura enhances the functionality. In addition to the damage around the enemy gives consistently. \ N Required skill: # c Dark Aura 20 level or higher # (Further increases the Dark Aura's abilities by adding more damage)

Last: MP 60 consumption, 20% enhanced damage, base damage 100

@ bolded blue text: Sounds like it poisons targets nearby the target that is being hit.