The colors are used to tell a story in this very busy artwork
Theres an abundance of ways for you to untap Szeras and sacrifice a few creatures in the same turn to generate a ton of mana since its an artifact, but those creatures need to have cost a lot in the first place
While it's a bit of a gamble, upticking it is worth it to get you to its -9 ability, which permanently prevents your opponents from casting noncreature spells
The versatility and efficiency of a well-built artifact deck ends up being more than enough to banish any lingering regrets about the loss of inherent combat potential from scaling back the creatures
As always you can find me on Twitter at @RappaciousOne and on BlueSky at @RappaciousOne.bsky.social for questions, comments, and feedback
Having completed the set-up you should have a deck of (at least) 60 cards in front of you, and five cards in your hand