Storm Dominator, Commander Thavas (SP)

[Stride] (Released when both players' vanguards are grade 3 or greater!)-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] Stride this card on your (VC) from face down.
[ACT](VC)[1/Turn]: [Choose a face down card named "Storm Dominator, Commander Thavas" from your G zone, and turn it face up] Choose up to one of your rear-guards, until end of turn, it gets [Power]+5000,"[CONT](RC):This unit can attack from the back row.", and until end of turn, this unit gets "[AUTO](VC) Generation Break 3 Wave-4th time only (This ability is active during the specified battles of each turn): When your unit attacks a vanguard, choose three of your opponent's rear-guards, your opponent chooses one rear-guard from among them, and retires it.".