Korvef, Ravnica's Avenger

+1: For each planeswalker you control, you may activate one of its loyalty abilities once this turn as though none of its loyalty abilities activated
-4: Until the end of the turn, each activated ability and triggered ability of nonplaneswalker permanents you control trigger and activate twice.
-10: You gain an emblem with "Planeswalkers you control have all loyalty abilities of all other planeswalkers on the battlefield"