Stonehide

Whenever Stonehide blocks or becomes blocked by a creature, put a stone counter on that creature. It loses all abilities, gains defender, gets +0/+2, and becomes a colorless Gargoyle artifact in addition to its other types.
Other Gargoyle creatures you control get +2/+0.
As punishment for past sins, the gods made sure he would never hurt anyone again. He found a clever way around that.