A lot of it is just massive Nerf.
The damage reduction was really strong and the range on exploding corpses was ludicrous.
I understand the shock value of instantaneous reanimation, but maybe have it be delayed a little or affected by distance to the caster.
Plus it would be nice as a reanimated to have a little warning first.
Reanimated seemed fine and fair. It was fun the hectic battles of trying to run away from and kill them while also worrying about the necromancer maybe peeking you.
Overall it was playable against. I spent most the time playing scourge though because movespeed is bae.
The necromancer farmed kills like crazy through reanimating. If a teammate did enough damage and was reanimated the poison from corpse explosion netted a lot of finishers.
All in all was neat. I'm not sure if I would rather it stay strong and event only or be released as playable.