Diabolos Returner, Deryck (D-BT03/SP04EN) [Advance of Intertwined Stars]

[CONT](RC):If you are in "Final Rush", this unit gets [Power] +5000. [ACT](RC)[1/turn]:[COST][Counter-Blast 1] & Put a rear-guard into your soul], choose one of your opponent's rear-guards for every four cards in your soul, and retire them. Then, if you are in "Final Rush", look at the same number of cards from the top of your deck as the number of your opponent's open (RC), choose any number of units from among them, call them to (RC), and put the rest into your soul.