[FIEND/EFFECT] This card cannot be Normal Summoned or Set. This card can only be Special Summoned by removing 1 Fiend-Type monsters in your Graveyard from play. When that card is destroyed as a result of battle or by your opponent's card effect, it is treated as an Equip Spell Card at the end of the turn. Equip 1 of your opponent's monsters with this card. As long as it is equipped with this card, you control the equipped monster.