D/D Savant Galilei is a Common Pendulum Effect Monster card from Yu-Gi-Oh! (Pendulum Domination Structure Deck, SDPD). Current market price: $0.05.
Common
Pendulum Domination Structure Deck (SDPD)
Card Text
[ Pendulum Effect ]
You cannot Pendulum Summon monsters, except "D/D" monsters. This effect cannot be negated. Once per turn, during your Standby Phase: Increase this card's Pendulum Scale by 2 (max. 10), then destroy all monsters you control with a Level less than or equal to this card's Pendulum Scale, except "D/D" monsters.
[ Monster Effect ]
During either player's turn: You can discard this card, then target 1 "D/D" or "Dark Contract" card you control; return it to the hand. You can only use this effect of "D/D Savant Galilei" once per turn.
