The Organism

Devoid
Defender
Mutated creatures you control get +2/+2 and have ward {1}.

Whenever this creature is dealt damage, create a colorless 1/2 shapeshifter horror token with “Whenever this creature mutates for the first time each turn, put X +1/+1 counter on it, where X is the number of times this creature has mutated.”

“My God, what the hell happened here?”
-Dr Cooper