Alta, Cursed of Immortality

Flying
Whenever a creature you control dies, draw cards
equal to it's total mana cost. If you draw a creature, land, or enchantment, you may put it
onto the battlefield tapped. If it's an instant,
sorcery, you may cast it without paying it's mana
cost. If it's a planeswalker, you gain 10 life.
{1}: Sacrifice a creature.