Crâne de Marbre Vitesseroid MP18-FR001

Once per turn, during the Standby Phase, if your opponent controls a face-up monster that was Special Summoned from the Extra Deck, you can Special Summon this card from your hand. This card is not destroyed by battle with a Normal Summoned/Set monster. Your opponent takes any battle damage you would have taken from battles involving this card. You can only use this effect of "Marble Speedroid" once per turn. If you control a face-up monster (other than "Speedroid" monsters), destroy this card.