Fortitude 
Enchantment — Aura
Enchant creature Sacrifice a Forest: Regenerate enchanted creature. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL