I think you'll enjoy Magic 's trip into the grimdark millennium of the 41st century with Warhammer 40,000 Commander decks.
Grixis uses its graveyard well, as you can see with some of these cards that support a graveyard-centric strategy
Pan-Meria combined one of my favorite Modern budget decks (Mono-White Emeria) with one of my favorite cards (Panharmonicon) along with the same Felidar Guardianbased infinite combo loops we just talked about in Standard, minus Walking Ballista (which quickly became too pricey for budget decks) as the win condition
There are other decks like Arceus VSTAR or Chien-Pao ex / Baxcalibur that are also viable, and in order to keep it simple, Im not differentiating between variants of archetypes like Mew VMAX or Lost Box
Though very notably, one missing feature has the ability to trade with other players
I like that with self-bounce lands like the Karoo Cycle like Azorius Chancery that will pop it up for another color land while giving you more landfall