Zi, Deathright Necromancer

Minion Offering
If you sacrificed a token creature as you cast Goblin Deathright, Goblin Deathright has "Goblin creatures you control have Undying."
Sacrifice a Goblin: Draw a card, then discard a card.
Sacrifice two Goblins: Return target instant or sorcery card from your graveyard to your hand.