muu was unable to sense the clam. so he exausted himself until finding it. after he found it, mizukage cancelled genjutsu and they fought for a while. since mizukage also had the liquidfying ability he might've defended against the dust release in his own way.
after a while mizukage used jockey boy, muu did everything he could but he couldn't prevail. he then split himself apart one of them went for a suicide attack with jockey boy. and the other went for the real one since he can be sensed now.
mizukage is weak because of jockey boy, muu is weak because of splitting.
they made their moves and killed each other and jockey boy killed the other half before being dispelled.
how was it xd