Lambholt Pacifist

Creature — Human Shaman Werewolf3/3
This creature can't attack unless you control a creature with power 4 or greater.
At the beginning of each upkeep, if no spells were cast last turn, transform this creature.
Lambholt Butcher
Creature — Werewolf4/4
At the beginning of each upkeep, if a player cast two or more spells last turn, transform this creature.
True peace can't be achieved until everyone else is dead.