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The only changes I'd consider making are more untapped lands, and Insidious RootsInsidious Roots

Brago, King Eternal probably still wears the crown when it comes to commanders for this archetype, letting you flicker your whole board every turn in most cases

Deflecing Swat will definitely save your commander from Deadly Rollick and much, much more

She did so and deals out devastating blows from its back, while it crushes enemies in its tongue's grip

Thats not always a given for green decks, so I imagine Synchronization will be very good in some shells, though worse on average than Cultivate

See How to Determine in a Pokemon Card is Worth Grading for more details on how to make that determination and our article on the Best Pokemon Card Grading Companies for help choosing the right grading company for you