I do really like the flavour of each player pumping mana into Chain Lightning to have it jump back to a second target on the opponent's side of the field, and so on and so on
It stipulates the creature must be legendary, but thats hardly a problem in Commander, where it sees the most play
While Sylvia is herself a Knight, its ironically Khorvath who better supports the type here, as he grants all of your Knights flying and haste
With Axonil in play, Roiling Vortex will inflict at least four damage to each opponent during their upkeep, assuming Axonil's power hasn't been pumped at all
The Dimir God of Theros, Phenax possesses indestructibility, making him a huge hassle to remove
Even if that does happen, however, Orcish Bowmasters is still likely to hold a spot on this list