[Arts] Pole of Agony: Evil Spirit

* One evil spirit is summoned every 0.5 sec near [Pole of Agony]{nl}* The effect of [Invocation: Demon Spirit] is applied{nl}* The Skill Factor of spirits created is equal to that of [Pole of Agony]{nl}* If you do not have [Pole of Agony] learned, the arts effect will not activate{nl}