Phya, Bloodwoken Deity

If you would sacrifice one or more creatures as a
cost to cast a spell or activate an ability, you may
instead discard that many cards.
If you would discard one or more cards as a cost
to cast a spell or activate an ability, you may
instead sacrifice that many creatures.
{b}, Pay 2 life, Discard a card, Sacrifice a creature: Return Phya from your graveyard to your hand.