Culling Cathedral

As Culling Cathedral enters the battlefield you
may exile a creature with power 2 or less. If you
don't, Culling Cathedral enters the battlefield
tapped.
{t}: Add {w} or {b}.
{4}: Create a 1/1 white spirit token with flying.
Exile Culling Cathedral. Only owners of cards
exiled by Culling Cathedral may activate this
ability.