Made only with cards from the original start pack and boosters that I loved when I was younger.
And a few promos. I cheated.
I took a while, but I finally got a smooth digivolvution tree that worked.
The deck mainly consists of reds, yellows, and reds that have an unusual strength against greens. So, I use the red cards to encourage the other player to play greens, and then switch to the anti-greens to mop it up.
Downgrade, Black Gears, the R/G/Y offensive cards, and counter attack all are there in case the other player plays any high-level reds, since I only have 4 greens in the deck, all of them champions.
Or, at least, that's how I hope it'll work. The deck is still untested.