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All to say, I think this strategy will scale up for Commander if it already hasnt started infesting local metagames

There are a few combos and special interactions that makes this mechanic pair so powerful, and even some powerful Modern decks that you might have some interest in

I need more of that in my life, thanks

Its been more common for WotC to create new subtypes than main types

That in itself usually isnt especially good, but it also enters with loyalty counters that it can move on to your planeswalkers when they enter the battlefield

Provided it lasts long enough, or you drop it late enough, it can seriously accelerate your game plan