Greater Rituals and Ceremonies are taxing on the participants. These greater versions maximize the amount of power which can be channeled through them to a dangerous level. This takes a toll on the participants, causing them to suffer a form of fatigue, malaise and/or Exhaustion. This often leaves them personally vulnerable right after completing greater functions, requiring protections of various sorts.
Ritual Lores represent specific bodies of knowledge that allow characters familiar with ritual practices of all kinds.