Abathur, Swarm's Evolution

{g}{u} : Untap all creature you control. Activate
this only as a sorcery and only once per turn.
Sacrifice two creatures : Choose one.
- Draw two cards then discard a card.
- Add two mana of any combination to your
mana pool.
{2}, {t}: Put Abathur, Swarm's Evolution on top
of your deck.