Guardians of Stone

(As this Snow Saga enters and after your draw step, add a lore counter. Sacrifice after III)
I: Creatures you control gain vigilance. Whenever a creature with vigilance attack you gain 1 life.
II: Put a +1/+1 counter on each creature you control. Whenever a creature with a +1/+1 counter
on it deals combat damage to a player, draw a card.
III: Creatures you control gain indestructible. Whenever a creature with a +1/+1 counter on it attacks, put an additional +1/+1 counter on it.