Berserk 175/221 (Conspiracy: Take the Crown)

Cast this spell only before the combat damage step. Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.

NM - $26.50
LP - $21.50
MP - $16.00
HP - $11.00
DMG - $5.50