Crush Card Virus ripped apart any Yu-Gi-Oh
In a surprising twist, Umbreon (of Moonbreon and Sunbreon fame) actually is worth quite a bit less than its Psychic-type sibling
While he undoubtedly has drip (just look at all of those beads, and the golden kneecaps carved to look like dragon faces) he also has a bit of a branding problem
Breya, Etherium Shaper If youre looking for an artifact based Commander, Breya, Etherium Shaper is a fine choice, and being four colours gives you access to almost endless options across blue, red, white, black and colourless cards
The deck is far too creature-heavy, with 39 in total, which is somewhat understandable given there will be a lot of sacrificing, but that's typically reserved for tokens, which can be created by instants, sorceries, and enchantments
That's a solid boost and a great way to funnel a lot of Energy in one hit in the correct situation