Supreme Heavenly Emperor Dragon, Dragonic Overlord "The Ace" (PR/0246EN) [Promo Cards]

Stride [ACT](VC):[Counter Blast (2) & Choose a face down card named "Supreme Heavenly Emperor Dragon, Dragonic Overlord "The Ace"" from your G zone, and turn it face-up] If the number of face up cards in your G zone is two or more, until end of turn, this unit gets drive-1, and "[AUTO](VC)[1/Turn]:[Choose a card from your hand, and discard it & Choose a card with "Overlord" in its card name from your hand, and discard it] At the end of the battle that this unit attacked a vanguard, you may pay the cost. If you do, [Stand] this unit, and this unit gets [Power]+5000 until end of turn. (Even if you do not pay the cost, this ability cannot be used for the rest of that turn)".