Malefic Truth Dragon

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by its own effect. If a face-up "Malefic" monster, except "Malefic Truth Dragon", is destroyed by battle or a card effect, you can pay half your Life Points to Special Summon this card from your hand or Graveyard. There can only be 1 face-up "Malefic" monster on the field. If there is no face-up Field Spell Card on the field, destroy this card. If this card destroys an opponent's monster by battle, destroy all face-up monsters your opponent controls.