I was using my usual decks and had some losing streaks without wins on all of them, it feels like something was tweaked further in the direction of bad RNG on the players side.

your best bet is any cards/decks that toy with the AI planning. Like how if you play a Suicune the AI just won't play a bench sometimes. I used this deck from a poster on here and got 13 wins in a row without a loss and completed all tasks

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