<big>'''Backlash'''</big>: I've noticed on 2 or 3 ocassions that you can get a backlash if you pray at another altar inside the holysite area. This is important because at several holy sites I've seen people put altars right next to the holy site. It is a pain to walk outside the holy site to spam prays but then your characters with bad soul strength won't blow up the holysite.
(Dirk, Apr 24th 2023)