I'll go ahead and add my voice to all the people asking for dedicated alchemy-free matchmaking for all formats - especially brawl and historic brawl. The ability to repeatedly conjure cards out of thin air runs counter to the entire idea of a singleton, fixed-decksize format. Not to mention that the alchemy mechanics are just exceptionally unfun to deal with, especially when abused egregiously (i'm looking at you, crucias). Win or lose, I've never come out of a match against an alchemy-focused deck with a good taste in my mouth, so I - and many others - would appreciate the ability to avoid those cards like the plague that they are.