"I bolded all of the claimed roles in red. Not just those two. Bernkastel is the avy I'm using now, she's also my submission. As for them working together, I have to explain some flavour here, so bear with. I used Red because red text in the flavour has significance as it serves as your proofs to figure out the puzzle.
Bernkastel is the Witch of Miracles. That's what she governs. As long as the possibility of an outcome is not 0, she can find a way to make said outcome come true.
Lambdadelta is the Witch of Certainty. She can increase the liklihood of an outcome to become certain, i.e. 1 (if we're using probability scales).
In the flavour, they are somewhat opposed. Lambdadelta is rooting for a tie result, while Bernkastel is rooting for Mystery to beat Fantasy. As a result, they agree that if Fantasy looks like it's going to win, then they can work together to beat Fantasy, until Mystery has a chance again, to which they'll go back to being opposed. The video below establishes what I'm saying. I have no idea what their alignments are, as flavour has no bearing on alignment. Otherwise, I'd say they'd both be a form of Indie."