Ajani, Roar of Heroes

+1: Planeswalkers you control become 2/2 white Cat creatures until end of turn. Prevent all damage that would be dealt to them this turn.
-3: Put a loyalty counter on each of up to two other planeswalkers you control.
-7: Double the number of loyalty counters on planeswalkers you control. You may activate abilities of planeswalkers an additional time this turn.