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I split this off from this question: Do spells from the Ritual Caster feat need to be prepared when taken by a Warlock? at the recommendation of comments there because the Cleric's Ritual Caster class feature could have an effect on the answer.
Say I have a Cleric that takes the Ritual Caster feat. Do the spells learned from the feat have to be prepared by the Cleric before being cast as a ritual or do they always have the spells available to cast as a ritual?
My confusion stems from the fact that most of the mechanics from the Ritual Caster feat seems to mirror the way a Wizards casts spells. Wizards are the only class that are specifically allowed to cast spells as a ritual without preparation by default. However, nothing in the feat actually describes that it works the same as Wizard ritual casting or different from it. On top of that, the Cleric Ritual Caster class feature says that ritual spells do have to be prepared.