This is why I suggest Guild Artisan as a possible pairing: it can give you up to four treasures a turn when Karlach attacks, which will let you power out some truly terrifying monsters
In terms of the decks themselves, each features both a Khan and a Dragon as the two face Commanders
Unlike many ramp effects, it can grab any Forest, not just Basic ones - allowing it to dig up certain dual- and tri-lands - and still leaves behind a creature, albeit a small one
Apex Devastator is underplayed as it is, and this has the potential to outshine it
You can easily modify it to play more uniquely, or take advantage of the unique abilities of Omo, Vesuvan Queen
Odd considering the singleton nature of Commander, but Sakashima's already a standard clone on its own