Nissa, Worldwaker is a mythic Legendary Planeswalker — Nissa card from Archenemy: Nicol Bolas (E01), collector number 68. Current market price: $4.52, TCGplayer market prices via Scryfall.
+1: Target land you control becomes a 4/4 Elemental creature with trample. It's still a land. +1: Untap up to four target Forests. −7: Search your library for any number of basic land cards, put them onto the battlefield, then shuffle. Those lands become 4/4 Elemental creatures with trample. They're still lands.