I also might try Minion of the Mighty as a way to cheat in an expensive Dragon on its attack trigger, especially since Miirym can make a copy of it
Card Name Mana Cost Type Creature Human Wizard Rarity Rare rules Text , Sacrifice this creature: Counter target noncreature spell unless its controller pays .Disturb (You may cast this card from your graveyard transformed for its disturb cost.) P/T Number 61 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (9/24/2021) Disturb is found only on the front faces of some double-faced cards
The most popular of the non-traditional formats (Standard, Modern and Legacy) is EDH (Elder Dragon Highlander), better known as Commander
Groudon-EX could be your perfect choice if you aim to enhance your decks power and resilience
There's a good reason Pantlaza Sun-Favored sees so much play
He looks like an excellent spell-slinger commander