Fusion Fright Waltz (TDIL-EN069) - The Dark Illusion Unlimited

Target 1 "Frightfur" Fusion Monster you control and 1 Fusion Monster your opponent controls; destroy as many other Special Summoned monsters on the field as possible, then each player that had a monster(s) destroyed by this effect takes damage equal to the combined current ATK of the targeted monster(s) on the field.