Activate by sending 1 face-up "Infinite Machine" in your Spell & Trap Zone to the GY. Cannot be destroyed by an opponent's card effect. "Timelord" monsters you control cannot be targeted by card effects. Neither player can return a "Timelord" monster into the Deck. Once per turn, if you control no monsters: You can Special Summon "Timelord" monsters with different names, up to 1 each from your hand, Deck, and/or GY.