Nissa Revane
Zendikar — mythic
Legendary Planeswalker — Nissa
Nissa Revane rulings:
2009-10-01: You may activate Nissa’s first ability even if you know you have no cards named Nissa’s Chosen in your library. You must still shuffle your library in that situation.
2009-10-01: You may activate Nissa’s second ability even if you control no Elves.