Order of the Guardians

Superheroes you control have lifelink.
Whenever an opponent attacks you or a Planeswalker you control, they must pay {1} for each creature.
Every turn you don't attack, put a peace counter on Order of the Guardians.
Remove a peace counter from Order of the Guardians; add one mana of any color
Remove a peace counter from Order of the Guardians; gain two life