Much of what separates cEDH and traditional Commander is the access to fast mana, and game-winning cards that need few other cards
This infinite blink combo mills out all your opponents at once
While having a deck built around flightless, oversized chickens sounds like a meme, the synergies are actually shockingly powerful, to the point where I think that Chocobo might actually be a real deck in Standard, especially once rotation and bannings make red aggro less dominant
Its unique speed mechanic rewards constant aggression, and it lets you draw more and more at the end of each turnthough youll pay for it in life
Cephalid Looter (Odyssey/Torment/Judgment) The defining common for blue in Odyssey Block, Cephalid Looter interacted amazingly with flashback, threshold, madness, and the Incarnations
Sicarian Infiltrator Once again, we get the scalable benefits of the squad mechanic