Sphere Mortality.

Discovering by accident that you gem allows you to strip ghost's of life potion I guess is fair enough.

Repeatedly using the skill on Blueskull's ghost then mocking him as he summons ship

demonstrates a very twisted and desperate eprsonaility even for a Sorcerer.

No doubt at some point the skill will be changed and it wont work on ghosts again

Alternatively the gods might make it that we can do nasty things to your Astral form - that would be nice.

Written by my hand on the 22nd of Agamnion, in the year 1001.