Well, this should be a breeze. Wind does trump fire after all, right? ...wait, you mean that's just Stu-pei? Oh well, not like it really matters for Yukari in this match anyway. To beat Cleo, she'll be relying heavily on one thing she has that her opponent doesn't, deep resources and full healing. Cleo can lay down all the damage she wants, and Yukari will just heal it all away as fast as it came in. Slowly but surely, Cleo will just run out of resources and fall down from the bits of sniping Yukari manages to do between Diarahan castings. It's not the fastest way to victory, but patience(at least in battle) is a virtue that Yukari has enough of to just ride this one out.