If you want some inspiration, you can read my article on how every Commander deck can use the graveyard
"Most players on r/EDH have suggested building Kamiz as an Infect deck, which proves their minds are in the gutter." Surprisingly, the average Kamiz deck appears not to be Infect-focused at all, despite the addition of the new Toxic mechanic from Phyrexia: All Will Be One earlier this winter
And as we played more, it became obvious that our one small dungeon didn't have enough variety from one game to the next to support people jamming in hundreds and hundreds of games, and the sense of exploration would diminish even faster
Najeela, the Blade-Blossom takes a more hands-on approach to its token generation, allowing you to create 1/1 Warriors each time a Warrior attacks
When someone spend $5 to get a fake copy of Aura Shards instead of $15 to get an authentic copy from their local game store, it cuts into the already tiny margins that most LGSs have to work with