Well, if you don't mind control aspects, you could try some, unless you prefer critter-only:
PC: Well to stay in mono-entropy, I believe the only option would be Butterfly Effect (shields and most weapons can be very annoying on PVP, most notably Phase Shield), although that would need lycanthropes too. Considering the amount of pillars this could be pulled off in my opinion, you could even take one or two off for that, and a couple abominations, if you wanna stay 30 cards (considering you add only 2 of each).
CC: You got Maxwells, though it's situational use. Chaos Powers and Pandemoniums (the latter prefentially upped if you don't want to hurt your monsters) could help on that.
I also think you could add another dragon, helps in drawing it, but putting too many might make the deck too slow.