Nissa Revane is a mythic Legendary Planeswalker — Nissa card from The List (PLST), collector number ZEN-170. Current market price: $8.09, TCGplayer market prices via Scryfall.
+1: Search your library for a card named Nissa's Chosen, put it onto the battlefield, then shuffle. +1: You gain 2 life for each Elf you control. −7: Search your library for any number of Elf creature cards, put them onto the battlefield, then shuffle.