One of your options is everyones favorite Food Golem: Gingerbrute
If this spell was kicked, instead search that player's library for up to fifteen cards, exile them, then that player shuffles
This technically makes it Standard-legal, but its only really useful in Brawl since Standard doesnt use commanders
Then I would snag Growing Rites of Itlimoc, it's absurdly good in a creature-heavy deck like this one and a steal at $6
We are told the approximate ratios, in the form of an evil middle-school math problem: There are about half as many neon green cards as neon blue cards, and about a quarter as many neon red cards as neon green cards. Ill spare you the equation and the fractions, but at those ratios, a sheet of 121 cards would have roughly 75 blue, 37 green, and 9 red versions