2 "Wind-Up" monsters
If this card is destroyed and sent to the GY: You can target 1 "Wind-Up" Xyz Monster you control; attach this card to it as material. You can only use each of the following effects of "Wind-Up Maintenance" once per turn.
* If this card is Link Summoned: You can add 1 "Wind-Up" card from your Deck to your hand.
* You can banish 1 face-up "Wind-Up" monster you control, face-down; Special Summon 1 monster from your Deck with the same name that card had on the field.