They walk between the planes , exploring the multiverse, dealing with world-ending threats, getting into unlikely scrapes, and generally making a humongous mess wherever they roam
Edric, Spymaster of Trest Edric, Spymaster of Trest leverages blues many unblockable creatures, like Mist-Cloaked Herald and Slither Blade, to slip through your opponents defenses and rip through the deck to chain together extra turn spells, and eventually conclude the game with a Beastmaster Ascension or something
Since our two best threats are a black card and a colorless card, one of our two colors should be black
Combine this strategy with Soulherder, and youll reanimate something on each of your endsteps
Coin of Fate is really neat
Ideally the commander has some ability which adds momentum to the combo plan