Thunderbolt Shockwave Colossus | G Counter Charge !

(This card cannot be in your main deck) 

[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.(When this card Strides, it gains the power and name from one heart. At the end of the turn, return it face up.) 

[AUTO]:[Counter Blast (1)] When this unit is put into the G zone from (VC), you may pay the cost. If you do, choose up to one other face up card from your G zone, and turn it face down.

By the cost of 1 Counter Blast you can have a a Counter Charge on your G zone. I don't know if this card will be use in real competition, but it would be fun to try with!