Mindcrafter Greater Mental Blast
It's not very clear that you can hit something with this even if the target gets blocked by the wall
Since the Mindcrafter's greater mental blast uses what I assume is the targeting feature developed for missiles, the visuals get blocked by walls but the skill definitely still hits and does damage even without the green X being on creature. And as such it's is hard to tell/know that the [i]nvoke doesn't get blocked/mitigated and the damage goes through anyway. If it was a floating green "X", without the connection back to the character @, it might work better.
This in the noteye ASCII version of 3.0.6