Ora, Overseer Of Violence

Flying
Whenever Ora would enter your graveyard,
shuffle it into your library instead.
Creatures have -4/-0
Ora is not a creature unless total power among creatures you don't control is 25 or more
Prevent all combat damage that Ora would deal.
Whenever damage is prevented, put a -1/-1
counter on X target creatures where X is equal to
the amount of damage prevented