Supreme Heavenly Emperor Dragon, Dragonic Overlord "The Purge" (G-BT13/003EN) [Ultimate Stride]

[ Stride ]-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 from your G zone, and turn it face up & Choose a card with "Overlord" in its card name from your hand, and put it into your soul] If the number of cards in your opponent's damage zone is four or less, choose one of your opponent's vanguards, and deal one damage. All trigger effects are nullified for that damage check. [CONT](VC) Generation Break 3 :This unit's drive is equal to the number of cards in your opponent's damage zone.