Hmmmmm, it is hard to say.

1) Multiple Mindgates costs a lot of aether quanta to run each turn, i think it is more of a good synergy than being OP.
2) Unstable gas can be imba with this card but still that combo requires 3 elements. I doubt whether its abusable or not in a real game. Currently, i see it as a cool strategy.
I am not sure. I am more of a confused right now. It's difficult to compare this card to TU since creatures can be buffed a lot and then be copied. But for permanents you can't do that.
