Gisela, Planesflyer

Flying
Outlast {w}({w}, {t}: Put a +1/+1 counter on this creature. Outlast only as a sorcery).
Whenever you out a +1/+1 counter on Gisela, Planesflyer, put a loyalty counter on target Planeswalker you control.
Whenever you put a loyalty counter on target Planeswalker you control, creatures you control get +X/+0 until end of turn, where X is the number of loyalty counters on target Planeswalker.