The Butcher of Blaviken

+1: Place a 'Target' Counter on up to two creatures. (Creatures attacking or blocking a Target creature have +1/+1)
-3: Your creatures have vigilance and can block against menace as if they were two creatures until the start of your next turn
-7: The Butcher of Blaviken becomes a 5/5 legendary creature with menace, trample, and indestructable