Pendulum Effect
You cannot Pendulum Summon monsters, except "D/D" monsters. This effect cannot be negated. Before resolving the effect of a Trap Card that would inflict damage to you, you can negate the effect, then destroy this card. This effect can only be used once while this card is in the Pendulum Zone.
Monster Effect
You can discard this card, then target 1 "D/D" or "Dark Contract" card in your Graveyard, except "D/D Savant Newton"; add it to your hand. You can only use this effect of "D/D Savant Newton" once per turn.