Based on skill trees (read the other posts regarding ranks, etc). Bear in mind, all the spells/skills listed below are just describing their effects and proper creative descriptions will be added into the help file when they are implemented. The spells below are representative of Priests.
Casting time: the higher the number, the slower it is to cast.
Pre-requisites: the rank of the current spell/skill cannot be higher than the rank of the pre-requisite spell/skill
Critical Miss: Each weapon/attack type has a percentage chance of missing, regardless of any bonuses and levels of the attacker
Success: When casting aggressive spells, the success of the spell is dependent on the spell rank of the caster, the level of the caster, the saving throws and resistances of the victim.
General Curse
Cast: 1
Lowers target's attack by 1 per rank. At mastery rank, target has double the chance of critical miss
Curse Strength
Cast: 4
Prereq: General Curse
Lowers target's ability to deal physical damage by 1% per rank. At mastery rank, a critical miss by the victim will cause the victim to drop their weapon.
Curse Dexterity
Cast: 3
Prereq: General Curse
Lowers target's ability to use dexterity based skills like dodge/phase/parry. Mastery rank will cause the target to have a small percentage chance of receiving full damage when hit.
Curse Constitution
Cast: 5
Prereq: General Curse
Causes target to take more damage from each physical hit by 1% per rank. Mastery rank will cause the target to have a small percentage chance of receiving bleeding wounds.
Aura of Fear
Cast: 3
Prereq: Either Curse Strength, Curse Dexterity, Curse Constitution
Causes everyone in the same room to lower their attack by 1 per rank. There is a small percentage per rank that the attackers will flee. This spell becomes innate at mastery rank.
Heal
Cast: 1
1d6 per rank heal. At mastery rank, there is a percentage chance the heal is doubled.
Advanced Heal
Cast: 7
Prereq: Heal
2d5 per rank heal. At mastery rank, there is a percentage chance the heal is doubled.
Inner Heal
Cast: 5
Prereq: Heal
1d6 per rank heal, however, this is more of an ability to ask for divine help than a spell, so you can heal in silent and no magic rooms. Can only heal oneself.
Full Heal
Cast: 9
Prereq: Advanced Heal
4% heal per rank. At mastery rank, there is a percentage chance of the target restoring all of his/her hitpoints.