Initial impressions:
Like a lot of people my first impression of the chicken polymorph was it's too strong. No armor check and two rounds?
I've since changed my mind and find it pretty balanced.
It saves against magic (just isn't mentioned in the tooltip).
Chickens run for the hills. They don't just stand there like other CC. That's great if it's standing in next two several of your guys with opportunist, but a lot of the time, the chicken runs far off and/or around a corner. That detracts from its appeal a bit, as the target de-polymorphs and a ranger/caster/whatever is now pegging you from max distance. Alternatively you chase it or use another CC on it, but that often kinda defeats the point.
Same thing goes for the tentacle (disarmed npcs run off but only for one turn).
Bullrush seems broken. You can charge - multiple times - every round, for several rounds.
Summons seem fine. Long cool down. Doesn't hit like a truck, high mobility, a special ability but long cool down for it, can't tank.
I think totems are pretty balanced (maybe even hit too hard). If you get several up they do a lot of damage per round but are one-shot by everything. People are going to totally cheese them though and summon multiple pre-fight.
Asides that (haven't gone too far) decaying touch is now physical damage and I think infect now nukes physical damage instead of MR. If so, that's pretty awesome with necromancy being all - psychical damage, unlike the other schools.
