Most Commander decks play multiple spells, so Mangara is an easy source of card draw that encourages your opponents not to attack you unless they want you to have even more cards
Kefkas ability to wear down your opponents while helping you keep a steady supply of new cards feels extremely relevant to the current midrange meta in cEDH, although Im not sure that he will outperform Tymna the Weaver // Kraum, Ludevics Opus
Kess, Dissident Mage Its a huge deal in combo decks to have access to your graveyard as a second hand, and thats exactly what Kess, Dissident Mage brings to the table
Zndrsplt and Okaun also trigger on opponents coin flips, so popular cards like Mana Crypt may end up drawing some cards for Zndrsplts controller or buffing Okaun on other players turns
Updated April 27, 2022 by Joe Parlock: Kamigawa: Neon Dynasty finally knocked the partner colour pie out of balance with the introduction of a single, white creature with Partner
But the second is Demons, and the chaos far outpaces it