Swift Kirin

Flash
When Swift Kirin enters the battlefield, exile tar-
get spell until Swift Kirin leaves the battlefield.
You may cast that spell as long as it remains exi-
led, and you may spend mana as though it were
mana of any color to cast that spell.
{t},{3}{w/u}{w/u}{w/u}: Return Swift Kirin to it's owner's
hand.