Omniscience Dragon, Managarmr (G-BT02/007EN) [Soaring Ascent of Gale & Blossom]

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]:[Counter Blast (1) & Choose a face down card named "Omniscience Dragon, Managarmr" from your G zone, and turn it face up] If the number of face up cards in your G zone is two or more, choose up to two of your rear-guards, until end of turn, they get [Power]+4000, and "[AUTO](RC):When this unit attacks a vanguard, if this unit's [Power] is 20000 or more, until end of that battle, your opponent cannot call grade 1 or greater cards from hand to (GC).".