Wrenn the needy

: When Wrenn the needy transforms, create a 0/8 red and green "One" creature token with "When this creature dies, sacrifice a Wrenn planeswalker.
+2: search your library for a land card, reveal it, and put it into your graveyard. You gain one life for each land card in your graveyard.
-7: You get an emblem with "Whenever a land enters the battlefield, this emblem deals 2 damage to target creature or player."