Chandra, Legacy of Fire (CMM-735) [Commander Masters]

At the beginning of your end step, Chandra deals X damage to each opponent, where X is the number of planeswalkers you control.
+1: Add for each planeswalker you control.
0: Remove a loyalty counter from each of any number of permanents you control. Exile that many cards from the top of your library. You may play them this turn.