The combo of first-gen nostalgia and excellent artwork are the factors most likely driving this
Cast your first Disintegrate then use Fork to copy it
Build Highlights: Attack with your commander and cheat powerful, splashy creatures directly onto the battlefield, Each attack brings even bigger threats into play, quickly overwhelming your opponents with unstoppable force
Without much to go by since his ability depends on the contents of the Necron deck or perhaps a monoblack Vehicles deck, we couldn't see much of an opening to use Szarekh as the commander of his own Warhammer 40,000 deck, but, at least at this present moment, we could see him working well in a deck led by Greasefang, Okiba Boss from Kamigawa: Neon Dynasty
'Victory and power at any cost' is the mindset of a black player, as they sacrifice, extort, and drain their way to victory