Grepher des Ténèbres LCYW-FR208

When you receive damage from a card owned by your opponent, you can Special Summon this card from your hand. You must not control any cards to activate and resolve this effect. If it is Summoned this way, activate the appropriate effect, depending on the type of damage. Battle Damage: Special Summon 1 "Dark Emissary Token" (Elf/LIGHT/Level 7/ATK ?/DEF ?). Its ATK/DEF are equal to the amount of Battle Damage you took. Effect Damage: Inflict damage to your opponent equal to the amount of damage you took.