Knight of Blackness of Yore Undercover, Obscudeid DZ-BT03/033 RR

[ACT](Gauge Zone):If this card is an undercover gauge, COST [Soul Blast (1)], and call this card to a back row center (RC). [CONT](RC):If you have a grade 3 or greater vanguard with "Undercover" in its card name, this unit can attack from the back row center column, and gets [Power]+10000. (Active on opponent's turn too) [AUTO](RC):When this unit attacks from the back row center column, if you have a grade 3 or greater vanguard with "Undercover" in its card name, your opponent's vanguard is grade 3 or greater, and no drive checks were performed for the battle your rear-guard attacked this turn, COST [Soul Blast (1)], and until end of that battle, this unit performs drive checks, and gets drive -1. At the end of that battle, put this unit on the bottom of the deck.