Hydrik, Acid Thorn

Trample
Cascade (when you cast this spell, exile cards
from the top of your library until you exile a nonland
card that costs less. you may cast it without paying it's
mana cost. Put the exiled cards on the bottom of your library in a random order.)
Whenever you play a hydra put a +1/+1
counter on Hydrik, Acid Thorn or create a 1/1
hydra token creature