
+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.
Nissa, Worldwaker has 4 printings, first in Magic 2015 (2014). EDHREC ranks it #9,738 among Commander cards. It appears most in Carth the Lion decks (891 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.