I think they might make Alice buff only the creatures on the board. That would be fair, IMO.
I think they'll nerf Tov. It would be good to make him 3/2 so he can at least trade with other second-tier creatures.
They will definitely nerf Spawn, but I honestly don't know how to balance this thing.
I would also nerf Snow White because she's also an overpowered card for a second-tier creature, and she dominates all other second-tier creatures except Tov.
As for who else to nerf, I have no idea. Maybe the Necromancer with the name I can't pronounce.