Kashtira Riseheart

If you control a Kashtira creature
this card cost {2} less.
During your 1st Main Phase you can
exile 1 Kashtira creature from your
library and if you do exile the top
3 cards of 1 opponent's library facedown.
If this effect resolves Kashtira Riseheart's
CMC becomes {3}{r}{r}{r}{b} while it's on the field.