Rituals and places of power
I’ve only had one wizard use a ritual and was curious about its uses in your games. First off how lenient are you with “place of power”? Secondly, what did the wizard do and at what cost? The one example I have goes like this; the party was being attacked by an animated statue. Their piercing and slashing weapons could deal no harm and none had a blunt weapon. The wizard went several rooms away to a temple devoted to death. He cast a ritual that would make the statue brittle to any attacks. The cost was the party had to keep the statue busy for awhile and then lead it into the room where the wizard had painted a sigil on the floor.
The statue was tricked onto the sigil and started to crumble. Turned to rubble by the party.