Bridle

When Bridle enters the battlefield, exile target creature until Bridle leaves the battlefield.
As long as the exiled card is a creature card, equipped creature gets +X/+X, where X is the exiled card's power. As long as the exiled card has flying, equipped creature has flying. The same is true for fear, first strike, double strike, haste, landwalk, and trample.
Equip {3}