Yeah I know how it works on P&P I just don't remember using it in solasta but it just sound like an overwatch with an ofensive spell, wich is completly fine with me even if on P&P you can be way more detailed.
I used it all the time in Solasta - ensures you get an early attack in, as enemies close, rather than waiting for your turn and makes a huge difference, and not just for casters. I think it's pretty sad that they didn't include even this basic version.