Many snakes have deathtouch, so these are cards that reward you for having deathtouch creatures around, and most share green, which should be your main color while playing snakes
Rebuff the Wicked Rebuff the Wicked is a Planar Chaos card that shows how white could have had access to more countermagic in a different timeline
Subsequently, I looked what streamers and players like Merchant and Noxious were playing and reading all the recommended decks on 'mtggoldfish' I found a few budget options that are fairly easy to build in Magic the Gathering Arena
Escape Tunnel did the unthinkable and power crept Evolving Wilds at common
Isshin, Two Heavens as One Our Commander is Isshin, Two Heavens as One
For beginners, Japanese sets with strong pull rates and recognizable Pokmon are usually the best choice