1.Teleport and netherswap, the requirement is so low and the effects are too powerful makes them "everyone-to-learn" skill, it should be added a strict condition for teleport and increase the requirement.
Solution: Don't take it on everyone. I have the self-control to not take those skills on everyone. Why don't you?
2.Knee-breaker and Force AI to move, skills like fireblood ,force AI to ceaseless move around because the AI would not stand in the fire or other detrimental surface. Sometimes AI will randomly move when there is no target on sight. This mechanism could kill any boss with a single man in one turn.
Solution: Don't use that combo. Fireblood is an otherwise awful spell.