Sunshine In The Cavern

Split second
If you control at least three other piercers, this spell has flash.

Destroy target nonblack creature. If no creature was destroyed this way, Underpeirce X, where X is your devotion to black. (When you Underpierce, target red creature you control gains your choice of either double strike, shroud, flying, haste, menace, or lifelink until the end of the current or next combat step, whichever comes first.)