It suggests the best 40 card deck for you based on Draftsim's card ratings
If thats not enough, you can borrow from the Simic Combine with Simic Ascendancy
Sandslash (Alola): It says in Ultra Sun that "It runs across snow-covered plains at high speeds." So it's fast and it is blue...plus we've seen Sonic in plenty of cold, snowy environments before
My hair is also red, but that is purely a coincidence
D/D/D, or Different Dimension Demons, is a favourite deck of mine (one that I used to KOG with before I worked out how to submit things on this site, which, I must confess, was very recent lmao), and one that was meta some time ago but has largely been lost to the sands of DL history
Despite this, however, the card is still fairly expensive, clocking in at around $13