[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]:When this unit is placed on (VC), if you have a heart card with "Ancient Dragon" in its card name, choose one of each player's rear-guards, retire them, and increase this unit's [Power] by the sum of the original [Power] of the units retired with this effect. Then, if the [Power] increased with this effect is 20000 or greater, this unit gets [Critical] +1 until end of turn.