The Third Sliver of Red

{p/w}{p/c}{t}Exile permanent you control. When The
Third Sliver of Red {ut} you gain life equal to sacrificed permanents converted mana cost
When The First Sliver of Red, The Second Sliver
of Red, The Third Sliver of Red, and The Fourth Sliver of Red are on the battlefield, opponents
must pay {2} per attacking creature and {1} per defending creature