Cleric enhancements (history)

The following list has been updated from official information by Turbine, and thus should be up-to-date.

Level 1

 * Devotion I: grants a 20% increase to the effectiveness of 1st level healing spells
 * Divine Vitality I: Activate to restore a small amount of spell points (average 19) to another character. Consumes a use of turn undead for the day.
 * Energy of the Zealot I: grants 20 additional spell points
 * Extra Turning I: grants 2 additional turn undead attempts before resting.
 * Improved Empower Healing I: Using Empower Heal feat costs you fewer spell points for each spell cast while in that mode (from 150% to 133%)
 * Nullification I: Grants a 20% increase to the damage of your 1st level negative spells.
 * Skill Tactics I: +3 on Diplomacy and Concentration checks
 * Skill Recovery I: +3 on Heal and Repair checks

Level 2

 * Energy of the Zealot II: grants 30 additional spell points
 * Divine Cleansing I: +2 to a friend's Fortitude save, takes 1 turning
 * Improved Devotion I: grants a 30% increase to the effectiveness of 1st level healing spells
 * Improved Nullification I: Grants a 30% increase to the damage of your 1st level negative spells.
 * Cleric's Wisdom I: +1 Wisdom

Level 3

 * Energy of the Zealot III: grants 40 additional spell points
 * Devotion II: grants a 20% increase to the effectiveness of 2nd level and lower level healing spells
 * Nullification II: grants a 20% damage increase to 2nd level and lower level negative healing spells
 * Skill Tactics II: +4 on Diplomacy and Concentration checks
 * Skill Recovery II: +4 on Heal and Repair checks
 * Divine Healing I: casts a heal-over-time on a party member, takes 1 turning

Level 4

 * Divine Light I: Activate this ability to deal 3d6 points of light damage to the targeted undead creature instead of attempting to turn it. Consumes a use of turn undead for the day.
 * Divine Vitality II: Activate to restore a small amount of spell points (average 23) to another character. Consumes a use of turn undead for the day.
 * Energy of the Zealot IV: grants 50 additional spell points
 * Greater Devotion I: Grants a 40% increase to the effectiveness of your 1st level healing spells.
 * Greater Nullification I: Grants a 40% increase to the damage of your 1st level negative spells.

Level 5

 * Cleric's Wisdom II: +2 Wisdom
 * Energy of the Zealot V: grants 60 additional spell points
 * Extra Turning II: You gain the ability to perform 4 additional turn undead attempts before resting.
 * Improved Devotion II: Grants a 30% increase to the effectiveness of your 2nd level and lower healing spells.
 * Improved Nullification II: Grants a 30% increase to the damage of your 2nd level and lower negative spells.
 * Skill Recovery III: Grants a +5 bonus to Heal and Repair skills
 * Skill Tactics III: +5 on Diplomacy and Concentration checks

Level 6

 * Cleric's Charisma I: Grants a +1 increase to Charisma score.
 * Devotion III: Grants a 20% increase to the effectiveness of your 3rd level and lower healing spells.
 * Divine Cleansing II: Activate this ability to grant another character a morale bonus on Fortitude saves for a short time. Consumes a use of turn undead for the day.
 * Divine Healing II: Activate this ability to give another character healing that persists over several seconds.Consumes a use of turn undead for the day.
 * Energy of the Zealot VI: grants 70 additional spell points
 * Improved Empower Healing II: Using Empower Heal feat costs you fewer spell points for each spell cast while in that mode.
 * Nullification III: Grants a 20% increase to the damage of your 3rd level and lower negative spells.

Level 7

 * Energy of the Zealot VII: grants 80 additional spell points
 * Divine Vitality III: Activate this ability to restore a small amount of spellcasting energy to another character. Consumes a use of turn undead for the day.
 * Greater Devotion II: Grants a 40% increase to the effectiveness of your 2nd level and lower healing spells.
 * Greater Nullification II: Grants a 40% increase to the damage of your 2nd level and lower negative spells.
 * Improved Devotion III: Grants a 30% increase to the effectiveness of your 3rd level and lower healing spells.
 * Improved Nullification III: Grants a 30% increase to the damage of your 3rd level and lower negative spells.
 * Skill Recovery IV: Grants a +6 bonus to Heal and Repair skills.
 * Skill Tactics IV: +6 on Diplomacy and Concentration checks

Level 8

 * Cleric's Wisdom III: +3 Wisdom
 * Devotion IV: Grants a 20% increase to the effectiveness of your 4th level and lower healing spells.
 * Divine Light II: Activate this ability to deal 4d6 points of light damage to the targeted undead creature instead of attempting to turn it. Consumes a use of turn undead for the day.
 * Energy of the Zealot VIII: grants 90 additional spell points
 * Nullification IV: Grants a 20% increase to the damage of your 4th level and lower negative spells.

Level 9

 * Cleric's Charisma II: Grants a +2 increase to Charisma score.
 * Energy of the Zealot IX: grants 100 additional spell points
 * Devotion V: grants a 20% increase to the effectiveness of 5th level and lower level healing spells
 * Extra Turning III: You gain the ability to perform 6 additional turn undead attempts before resting.
 * Greater Devotion III: Grants a 40% increase to the effectiveness of your 3rd level and lower healing spells.
 * Greater Nullification III: Grants a 40% increase to the damage of your 3rd level and lower negative spells.
 * Negation V: grants a 20% damage increase to 5th level and lower level negative healing spells
 * Skill Recovery V: Grants a +7 bonus to Heal and Repair skills.
 * Skill Tactics V: +7 on Diplomacy and Concentration checks

Level 10

 * Devotion V: Grants a 20% increase to the effectiveness of your 5th level and lower healing spells.
 * Divine Cleansing III: Activate this ability to grant another character a morale bonus on Fortitude saves for a short time. Consumes a use of turn undead for the day.
 * Divine Healing III: Activate this ability to give another character healing that persists over several seconds.Consumes a use of turn undead for the day.
 * Divine Vitality IV: Activate this ability to restore a small amount of spellcasting energy to another character. Consumes a use of turn undead for the day.
 * Energy of the Zealot X: grants 110 additional spell points
 * Improved Devotion IV: Grants a 30% increase to the effectiveness of your 4th level and lower healing spells.
 * Improved Empower Healing III: Using Empower Heal feat costs you fewer spell points for each spell cast while in that mode.
 * Improved Nullification IV: Grants a 30% increase to the damage of your 4th level and lower negative spells.
 * Nullification V: Grants a 20% increase to the damage of your 5th level and lower negative spells.

Unconfirmed
The following enhancements appear in the game data files but their implementation has not been confirmed yet:
 * Divine Elemental Smiting I, II and III
 * Divine Light III
 * Divine Outsider Smiting I, II and III