Privileged Inheritance

Creatures you control and creature cards you
own in exile have privilege, their privilege cost is
equal to their mana cost. (When a creature with privilege dies, if it's not a spirit, exile it instead. As
long as it remains exiled you may cast it for its
privilege cost. When you do, it becomes a white spirit
with flying in addition to its other colors and types.)
Privilege costs you pay cost {1} less.