Previous editions centered around a similar endgame goal as Ruby/Sapphire: ramp into the late game, drop a Lucky Dime, and pick up lore value from Tamatoa So Shiny or Ariel Treasure Collector
(At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) The Set Design team experimented with using echo on the card (a mechanic from the Urza's Saga block)
Theres a lot of sacrificing and burning going on, but Streets of New Capenna and Warhammer 40K gave us demon commanders that splash into other colors and do other things, and Final Fantasy brought quite a handful of demons too
For most players, it takes at least a couple of months to fully level up the Mastery Pass
I think itll be a fun deck thats relatively simple to work with if the rules of Magic dont stress you out
Aggressive Mammoth Agonasaur Rex Agrus Kos, Spirit of Justice Ahriman Ainok Wayfarer Ajani's Pridemate Akal Pakal, First Among Equals Akawalli, the Seething Tower Akul the Unrepentant Al Bhed Salvagers Alacrian Jaguar Alania's Pathmaker Alania, Divergent Storm Alchemist's Assistant Alenni, Brood Recruiter Alesha, Who Laughs at Fate