Lil'iana, Cursed Child

: When Lil'iana, Cursed Child enters the battlefield, if you control another common-rarity Pkaneswalker, create a 2/2 black Zombie creature token.
0: Sacrifice a creature: Proliferate.
-4: Create four 2/2 black Zombie creature tokens. Return up to two target creature cards from your graveyard to your hand.