Creatures (23) 4 Eight-and-a-Half-Tails 4 Tallowisp 4 Samurai of the Pale Curtain 3 Isamaru, Hound of Konda 4 Lantern Kami 4 Kami of Ancient Law Lands (22) 21 Plains 1 Eiganjo Castle Spells (15) Sideboard Theres nothing explicitly mono-color about Umezawas Jitte, but the importance of being the first to get a hit in means you really, really need to never stumble on mana
Meet Aesi and Wyleth, your Commander Legends precon commanders
Whenever a creature you control dies, put a corpse counter on this artifact
Ah yes, now we have arrived at "Magics" problem: it costs money
The costlier the non-creature spells, the bigger those Phyrexians will be, a perfect effect for spell-heavy blue decks with a Phyrexian twist
Mono-colored Commander decks aren't overly common, but there's an argument to be made that Red is the best color for building such a deck