For Competitive EDH None of these decks seem all that strong once you transition to higher power level tables, but well award this category to Hail, Caesar, if for no other reason than its just trying to get the table dead as soon as possible without fiddling around with gimmicky subthemes
Eldrazi Displacer and Thought-Knot Seer are both incredible on their own, but you can combine them with a few different cards to allow for an instant win condition
One neat trick you can do is cast this green instant as your first spell in a turn, forcing your opponents to either waste countermagic on the Veil or consent to a turn where your spells cant be countered
Punishing Damage: Whereas Incremental Damage is often triggered by your efforts, other forms hurt opponents whenever they make certain plays (Cemetery Gatekeeper, Harsh Mentor, Eidolon of the Great Revel, Zo-Zu the Punisher, Manabarbs), limiting their choices in what plays can be safely made as the game progresses
Flying Whenever you create or sacrifice a token, each opponent loses 1 life