Scorch, Blazing Echo

When Scorch enters, target an opponent. You may then search your library for a permanent with mana value less than or equal to the amount of creatures that player controls. Reveal it, then put it on the battlefield tapped.

{3}{u}{r}{g}, Sacrifice a permanent: Deal
damage equal to the sacrificed permanent's
mana value to target player, and deal half as
much to creatures that player controls.