Dark. Fiend/Pendulum/Effect. Pendulum Effect: During your Main Phase, if this card was activated this turn: You can place 1 "Dark Contract" Continuous Spell/Trap from your Deck face-up on your field. You can only use this effect of "D/D/D Zero Doom Queen Machinex" once per turn.Monster Effect: If a face-up "D/D/D" and/or "Dark Contract" card(s) you control, except "D/D/D Zero Doom Queen Machinex", is destroyed while this card is face-up in your Extra Deck, even during the Damage Step: You can Special Summon this card, then you can destroy 1 card on the field. If this card in the Monster Zone is destroyed: You can place this card in your Pendulum Zone. You can only use each effect of "D/D/D Zero Doom Queen Machinex" once per turn.