Amorphage Sloth (SHVI-EN030) - Secret Rare

Pendulum Effect : While you control an "Amorphage" monster, neither player can add cards from the Deck to the hand, except by drawing them. Once per turn, during your Standby Phase, Tribute 1 monster or destroy this card.
Monster Effect : Neither player can Special Summon monsters from the Extra Deck, except "Amorphage" monsters.