You thrust your IMMATERIAL AND MISSING ARM at the enemy, and somehow kill the VENGEFUL SPIRIT so hard that it's knocked out of the AFTERLIFE and straight to GLORIOUS NONEXISTENT NIRVANA. A rather CHARITABLE ACT, if you do say so yourself.
It's also not trying to possess you anymore, so that works, you guess.
that one monk purged her arm so hard it gave the power vacuum the ability to purge
...supposed to do?!!Physical attacks have no effect...Huh?Gaah, you little pest!!...then...Shff...what are we...Please be careful!!Wha!?ShffYou'll be possessed and killed if they touch you!!