Malefic Truth Dragon

Effect

Cannot be Normal Summoned/Set. Must be Special Summoned by its own effect. If a face-up "Malefic" monster(s) you control, except "Malefic Truth Dragon", is destroyed by battle or card effect: You can pay half your LP; Special Summon this card from your GY (if it was there when the monster was destroyed) or hand (even if not). There can only be 1 "Malefic" monster on the field. If there is no face-up Field Spell on the field, destroy this card. If this card destroys an opponent's monster by battle: Destroy all face-up monsters your opponent controls.