Qadshaddoll Keios (SDSH-EN001)

FLIP: You can Special Summon 1 "Shaddoll" monster from your hand in face-up or face-down Defense Position.

If this card is sent to the GY by a card effect: You can send 1 "Shaddoll" monster from your hand to the GY, and if you do, for the rest of this turn, all monsters you control gain ATK/DEF equal to the original Level of that monster sent to the GY x 100. You can only use 1 "Qadshaddoll Keios" effect per turn, and only once that turn.

Spellcaster / Flip / Effect, Structure Deck: Shaddoll Showdown