yugioh machine reactor structure deck El If this card attacks a Defence Position monster Yu-Gi-Oh!: Structure Deck: Machine Reactor

(Does it use the stack

Rather than paying six mana for Sanctuary Warden (which is still a fine card for these decks) you should first be taking Angelic Sleuth

(Transfer its materials to this card.) Once per opponent's turn (Quick Effect): You can detach 1 material from this card, then target up to 2 "Madolche" cards in your GY

Back on topic, I found another payoff I really like, because it additionally has applications in Orzhov lifegain: I'm also considering Tendrils of Corruption and the narrow but powerful Lashwrithe

That makes it perfect for midrange value decks using tap effects or cast-from-exile payoffs

Ancient Gear Fortress Boss monsters in an Ancient Gear deck can be tough to bring out