Liliana, the Last Hope is a mythic Legendary Planeswalker — Liliana card from The List (PLST), collector number EMN-93. Current market price: $5.60, TCGplayer market prices via Scryfall.
+1: Up to one target creature gets -2/-1 until your next turn. −2: Mill two cards, then you may return a creature card from your graveyard to your hand. −7: You get an emblem with "At the beginning of your end step, create X 2/2 black Zombie creature tokens, where X is two plus the number of Zombies you control."