This is an interesting idea. I like it. I would prefer to see it go to other element though. Aether already has lobo and silence, after all.
As the ability is now, it really should only be an aether card, but maybe make it a "Chaos Storm" Permanent (Entropy) or something like that, which lasts some turns, With an activated ability, costing 3-6 Aether Quanta and stopping Creatures abilities. As the card lies on the field, every turn each creature has a 5-10 % chance to Mutate! That would be fun