I really like the adjustments you made here! Of course it doesn't matter what I think—it matters what you think and how you like the deck, obviously. How has it been playing with the Top, Puzzle Box and the smaller number of counter-spells?

As far as what I would take out first, I’d say Khalni Gem and Frilled Mystic seem rather weak to me in the sense they arent contributing much to the theme of your deck. Id definitely take those out for something like Cyclonic Rift , Thassa, God of the Sea or Berserk . By the way—Berserk is a hilarious suggestion for this deck! I love it as an aggro-option for your commander. It may end up as a dead card in your hand most of the time but how awesome would it be to kill some with commander damage with that?!