Mitosis is a good card to have on your side:)
It isn't a lobotomizer because spawned creatures have the ability of the spawning creature; but an otyugh can eat new creatures as they come out...
Scarab is one of the best option ,but pharaoh spams scarabs for the same cost and is more resilient(but a mitotic scarab is faster to play).
Then Lycanthrope, retrovirus, armagio, giant frog, brimstone eater,forest scorpion, puffer fish, ray of light, steel golem,wyrm, deja vu,devourer, blood sucker,gargoyle, phase recluse and every growing creature.
Gargoyle maybe works because petrify is one-time use and it leaves room for another ability.But the cost is pretty high.