Nissa, Steward of Elements is a mythic Legendary Planeswalker — Nissa card from Commander 2020 (C20), collector number 224. Current market price: $0.40, TCGplayer market prices via Scryfall.
+2: Scry 2. 0: Look at the top card of your library. If it's a land card or a creature card with mana value less than or equal to the number of loyalty counters on Nissa, you may put that card onto the battlefield. −6: Untap up to two target lands you control. They become 5/5 Elemental creatures with flying and haste until end of turn. They're still lands.