Isidor, Waste-Born Ent

: When Isidor, Waste-Born Ent is put into the graveyard from anywhere but the battlefield, return it to the battlefield.
-1: Sacrifice a creature. Gain life equal to it's toughness. Then untap all swamps you control.
-1: Put a 1/1 green treefolk creature token onto the battlefield. Then untap all forests you control.