Raviel, Empereur des Phantasmes CT03-FR003

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by Tributing 3 Fiend-Type monsters on your field. Whenever your opponent Normal Summons one or more monsters, Special Summon a "Ghost Token" (Fiend-Type/DARK/Level 1/ATK 1000/DEF 1000) to your field. This Token cannot declare an attack. Once per turn, by Tributing 1 monster on your field, increase the ATK of this card by the original ATK of the Tributed monster until the end of this turn.