colorless spells you cast cost 2 less to cast.
[+1]: exile the top card of your library face down and look at it. create a 2/2 colorless spirit creature token. when that token leaves the battlefield, put the exiled card into your hand.
[-3]: destroy target permanent that's one or more colors.
[+1]: exile the top card of your library face down and look at it. create a 2/2 colorless spirit creature token. when that token leaves the battlefield, put the exiled card into your hand.
[-3]: destroy target permanent that's one or more colors.