Not including the obvious fighter skills what is the single most powerful skill type?

atk res solo is broken, and when the rest of the family comes out it would be even worse.

Surprisingly, I would have to say Brazen skills. With the easily obtainable HP threshold met, you can gain an immense amount of stats. Heck, they even stack! I feel the threshold is too easy to reach for such a large buff. By no means OP, but definitely very frightening when used correctly.

Wrath and special spiral.

Wrath allows you to ko units you shoulndt be able to.

Special spiral opens up AOE specials up.

Defiant skills 110%

While not necessarily a skill type, Wrathful Staff is the most busted skill in this game in my opinion. There is no counter to this skill at all (unlike Bold Fighter which has Wary Fighter, Guard or skills with similar effects to one of the two), and you pretty much have to hope that your units can tank a hit from any Healer that decides to attack. Even if you do survive, the Staff effects like Pain/Gravity/Panic. etc. effects just make it so much easier for someone else to stall the opponent to death or have someone else come in and finish the job.

EDIT: Dammit. Meant Dazzling Staff.
(This is what happens when you are awake for like 30+ consecutive hours without sleep.) .___.

Take an armored unit, slap pass on it. Done and done. Tier 21 here I come.