I dislike the evanescence thing. There is no need of it to avoid fractal abuse. Cost of the card already does that. A deck that specialize in using this shouldnt have anything beyond the creature, Fractal, and a lot of pillars (maybe a shield or weapon), and so would be vulnerable.
I also think the upped should maintain the unupped skill. Everyone taking damage while playing permanentes is more strategical and interesting than "anyone plays permanent, opponent takes damage". It would also make unnecessary these balance issues like evanescence. In fact, as it is now, upped form simply kill the unupped one.
I also think there should be another name for the card (spirits we have have some type of growth) and the skill. Earth revenge, really? What bad permanents did to earth so it would like a revenge? lol.