Poseidon, God of the Sea

Indestructible, trample
As long as you control six or fewer lands, Poseidon, God of the Sea isn't a creature.
Whenever an opponent cast's a spell, counter that spell unless they pay {2}. If that spell is countered, exile it and Poseidon. Return Poseidon to the battlefield at the beginning of your next end step.
Whenever Poseidon attacks, choose one card exiled with Poseidon. You may cast that card this turn without paying it's mana cost. If you do, return it to it'