Prophets are meant to teach and convert new followers. This is especially important if they are the first and only worshiper of a new and unknown god. If this is the case, whoever plays the prophet has full creative control over all aspects of the god. Details about their deity and religion are gradually introduced by the player over the course of the campaign. Feel free to make up any details you like about holidays and beliefs including any ethical restrictions or handicaps. The Prophet is the head of a unique religious movement, and may claim to be an avatar of the deity, or anything they wish. My advice is to keep your stories consistent. A deity can have multiple prophets, but if they disagree about anything (even a minor detail) it can end up creating rival factions and splinter groups within the church. Such infighting might never be resolved.
1st Level - Turn Undead
same as cleric
2nd Level - Recruit Disciples
Spread the faith by recruiting disciples. Give your best sales pitch and then the NPC makes a reaction roll. A disciple is a very special ally who rededicates their life to these teachings and helps convince others to take the prophet seriously. Disciples almost never need to check morale... almost. Each Disciple can repeat one spell/miracle that the prophet has already used, but then they loose this ability forever. One miracle per disciple only. Prophets can choose to recruit a number of disciples equal to their level, but any who die can never be replaced.
3rd Level - Cast Out the Spirits
|Jesus uses the once per session d30|
4th Level - Transfer Essence
Prophets can heal physical damage by transferring hp from one being to another. The prophet must first remain in physical contact with both for a full round, then d6 hp are transferred each round thereafter. The disciples are always willing to share their hp with others if the prophet asks them to. Yes, you can totally kill someone by accident (or design) if they drop below 0hp.
9th level - At this level a Prophet can build a stronghold and gather followers like a cleric. If this is the first church dedicated to their deity, then the prophet can choose a holy symbol for their religion and the god will begin to bring 1st level clerics into the fold. The new god is known across the land, and now anyone can play as a cleric of that deity.