- Casting time is increased to 1 turn, after which the spellcaster makes a saving throw vs. magic. If failed, the casting time is increased by another turn, followed by another saving throw. Repeat until saving throw is successful or spellcasting attempt is abandoned.
- The casting must be uninterrupted.
- Material components must be used.
- An appropriate holy book or sacred object must be present.
Clerics may use material components appropriate to their religion and culture such as censors, holy water sprinklers, bells, chimes, gongs, prayer wheels, candles, bonfires, etc. Rituals may also involve meditation, chanting, singing, bowing, dancing, acrobatics, theatre, or other activities appropriate to the cleric's religion. For the ritual to work, it must be something of a production and may or may not require participation by others.
This lends the cleric a little more versatility in fulfilling his or her duties, enables the creation of alternatives to the standard cleric (medicine men and women, witch doctors, shamans, and other practitioners of religion-based ritual magic), and allows for a style of spellcasting based on religious invocation familiar to many readers of fantasy literature.
[Edit: Casting time revised 5 June 2014.]