Star-vader, "Reverse" Cradle (BT15/006EN)

[AUTO](VC) Limit Break 4 (This ability is active if you have four or more damage):When your unit with "?" in its card name is placed on (RC), choose one of your opponent's rear-guards, lock it, and this unit gets [Power]+5000 until end of turn. This ability cannot be used for the rest of that turn. (The locked card is turned face down, and cannot do anything. It turns face up at the end of the owner's turn.) [CONT](VC):All of your rear-guards with "?" in its card name is also a «Link Joker». [CONT](VC/RC): Lord (If you have a unit without a same clan as this unit, this unit cannot attack)