Even at smaller number, Empyrial Armor breaks the curve
Formats like Commander and Pauper started out as fan variants that eventually built up enough steam to get official recognition
You can pat yourself on the back for clever use of the legend rule to be your sacrifice outlet, and yes you come out with a measly one treasure per transaction, a lot of other triggers happened along the way, when a creature dies, when an artifact comes into play or is sacrificed, those payoffs can win you the game
Other than being a fine standalone value piece, it doesnt do anything particularly synergistic with the rest of the deck
On MTG Arena, well be getting two new cosmetic bundles
Mana Crypt is great, but so is Ancient Tomb