Thunder of Unity (Tarkir: Dragonstorm)

Enchantment Ñ Saga - (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I Ñ You draw two cards and you lose 2 life.
II, III Ñ Whenever a creature you control enters this turn, each opponent loses 1 life and you gain 1 life.