I think a quality of life improvement for this skill (while it is selected on your skill bar) would be some sort of indicator or line that cuts thru your life and mana globe that shows where the skill will reset you at any given moment.
Regardless, as of this point the skill appears a little buggy, more so in the favor of the user than not (i.e. getting a full mana bar refill), but it is noticeable when you deliberately try to use the skill for a specific outcome (I have only been tracking the mana aspect of the skill) and don’t get the expected result from using it.