Fiery March Colossus (G-BT05/040EN) [Moonlit Dragonfang]

[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. [AUTO](VC):[Counter Blast (1) & Choose one of your rear-guards, and put it on the bottom of your deck] When this unit attacks a vanguard, you may the cost. If you do, choose up to one of your opponent's rear-guards, your opponent puts that unit on the bottom of his or her deck, and until end of that battle, your opponent cannot call cards with the same grade as the unit put on the bottom of his or her deck with this effect from hand to (GC).