Spirit of Nike

Bestow {1}{w} (This card is an aura until removed)
If bestowed, enchanted creature has these abilities otherwise held by Spirit of Nike:
Flying
{w}: +1+/+0. Play only if you have less life than your opponents, and up to your devotion to white.
If Spirit of Nike detaches to become a creature, pay {2}{w} or return her to
your hand.