Yeah...unfortunately it seems like the lvl 4AI will "adapt" to my deck, and start ONLY giving me really hard decks to beat. And I haven't won a card, much less a rare card, in 20+ matches. But it's constantly throwing poison, and decks w/ steal/deflagration in them to get around my dimensional shield. Not sure if I should swap to AI 3 for a while or if I just have really shitty luck, but it DOES seem like AI4 isn't "Random decks" anymore, but the same 3 that are hard to beat over and over again.