Each has the core of the Tron deck, but they vary wildly in their strategy in achieving the late-game
Because of that, I'll focus on the best of the best, with a few fun exceptions
Pir, Imaginative Rascal and Laezel, Vlaakiths Champion will add an extra counter when you activate an ability that adds loyalty counters but not when you take them away
Thats right: Miles is doing a very passable impression of Dragons Rage Channeler
Cumulative Upkeep gave rise to the idea of using cards to switch ownership, putting the onus of the upkeep to your opponent
Starting hands with cheap cantrips like OptOpt and PonderPonder is also crucial, since you need those cheap spells to get yourself to multiple spells a turn, while also keeping your hand full