How about making phase shift ignore only the second hit you recieve every turn? This way it's interaction would not clash with foresight, turning it into a nice combined defense. At the same time you would still be bound to get damaged every turn if an enemy hits you (the first hit of the turn), making phase shift less of an invincibility. Right now fighting a single or few enemies at the same time turns phase shift into a sustainable invincibility. And if too many enemies appear you have the capabilities of crowd controling/kiting them through all of your self and enemy teleports and things like time skip with which you can turn most of every group fight into one on one.
@Housepet
Fail chance and backfire chance do not exist anymore as far as i know. But i like the concept of having a purple/red line appear in the middle that grows to both sides as your anomaly chance increases. The color of the bar to the left and right of anomaly chance could signal your spellpower bonus.
Maybe something along the lines of this:

(This is just an example,I don't think i got the paradox/anomaly numbers right xD. Also the doppler effect design of the anomaly bar was just a whim, i am sure somebody can come up with something better.)
The line in the middle actually could start appearing very vaintly (or in a different color) even before your anomaly chance gets over 0%, this way you'd have an indication that you are close to the breakpoint where your anomaly chance will be >0%.
The color of the blue bar would turn darker (or lighter) in relationship to your spellpower bonus regardless of anomaly chance. This way, even if you manage to get anomaly chance down to 0% at a paradox of 500, you would still have a visual indication that you are right now getting a huge spellpower bonus.
The color of the middle anomaly bar could also change depending on which type of anomaly you chose with bias weave. Yellow for physical anomalies, light purple-ish for teleport, gray-ish for temporal. And once you hit the treshold of major anomalies the bar would turn black or some other stark color signaling danger.