That would be a good one, But Excalibur makes it a 23/23 which is just redonkulous.
Biggest upside of Embercleave is that it gets you into red and out of dimir which is the worst colors for equipment voltron. I imagine most people are just going to play this guy as a way to have combo pieces like The One Ring (ofc), Bolas's Citadel and The Endstone in the command zone.
He's also broken and cringe in that they just changed the rules to allow spacecraft/vehicles and now a commander that partners with literally all of them and allows you to add dimir to your deck.
Scanning scryfall for fun ideas:
Eater of Virtue as your real commander (and this guy feeds it 3 keywords)
Litheform Engine (my beloved) in the command zone
Millennium Calendar turn 1 as your commander
Any of the Throne of Eldraine legendaries
Aetherspark for the "I wish I was playing brawl" commander experience
Masamune "on death" triggers
Any of the Vecna Trio to have Vecna as your commander.
Animus in the command zone self-mill
The "I can be trusted with Mindslaver in the command zone" special