Genesis Dragon, Amnesty Messiah (Secret)

[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.
[AUTO](VC):[Counter Blast (1)] When this unit attacks a vanguard, you may pay the cost. If you do, choose any number of locked cards, unlock them, and this unit gets [Power]+3000 for each unit unlocked until end of that battle. If the number of units unlocked is three or more, this unit gets [Critical]+1 until end of that battle.