Holy Seraph, Altiel (G-BT09/S01EN) [Divine Dragon Caper]

[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) Generation Break 3 : [Counter Blast (1)] All of the units in your front row get [Power]+2000 until end of turn. Rescue -[AUTO]:[Counter Blast (1) & Soul Blast (1) & Choose a face down card from your G zone, and turn it face up] When this unit is placed on (VC), you may pay the cost. If you do, choose up to the same number of cards from your damage zone as the number of face up cards named "Holy Seraph, Altiel" in your G zone, heal them, choose one of your vanguards, and for each damage healed with this effect, deal one damage. (Perform a damage check. Triggers will also activate)