[Snake]

But that's exactly the point in Ether Invitation. You attack once death is near because there's something behind your back making spooky ghost noises or something, and you freak out and wave your wooden stick at people, somehow hit one nerve that shuts down the enemy's brain functions and they lol die.
That's just what the skill is supposed to do, in a theme-wise, and it would fit more what Ghosts are good for, flipping the tables when near death.

What is NOT FINE, is to use it at full HP just because you took 100 damage and a few status effects, and turned that into a 500 damage nuke.

But at this point I'd rather just give up posting here from this point onwards, because sadly it's like Dev said, nobody wanna play nice and consent with a single idea, so no nerfs. Boo hoo. ¯\_(ツ)_/¯