Further information on the set mechanics, new Commander cards and special card styles will be available closer to release
My original list doesnt run any Game Changers, but it does have multiple dedicated tutors and has always been able to hang with decks that at least appear more powerful in the abstract
When playing a Mana Flare for my own benefit, I usually prefer to pair it with an extra turn effect or a splashy spell that gives me a lot of options like Time Stretch or Apex of Power
Some were useful, such as giving the party bonuses, extra spells, or the mage actually succeeding at casting the spell they intended to
The Toys Are Back In Town Boros Convoke received a number of great new tools in Duskmourn
The player who has the initiative ventures into the Undercity dungeon on their upkeep as opposed to drawing a card on their end step (like with monarch)