Priest

Healer DPS Discipline · Holy · Shadow

Discipline gets Penance, Holy gets Prayer of Mending, and Shadow gets critting DoTs. The healing toolkit stops being almost entirely single- target.

Talent calculator

0 of 51 spent

10level

Discipline

0 points · 18 talents · 51 ranks

Holy

0 points · 17 talents · 48 ranks

Shadow

0 points · 18 talents · 49 ranks

Click to spend a point, right-click to take one back.
A green border means partly filled, gold means maxed. That is the convention the game uses, so a written guide reads the same here.
Each row needs 5 points in that tree for every row above it. Arrows mark talents that need another talent maxed first.
A small + marks a talent that is new in Forever (4 of 53 on Priest).

Abilities

Every ability the Priest trainer teaches, in the order you learn them. 50 in total: 9 new in Forever, 29 with changed text, 0 no longer taught.

Level	Ability	In Forever	In Classic
1	Lesser Heal Changed 3 ranks · 1, 4, 10	Heal your target for 48 to 58. 30 Mana · 40 yd range · 1.5 sec cast	Heal your target for 48 to 58.
1	Power Word: Fortitude Changed 6 ranks · 1, 12, 24, 36, 48, 60	Power infuses the target, increasing their Stamina by 4 for 1 hour. 60 Mana · 30 yd range · Instant	Power infuses the target, increasing their Stamina by 3 for 30 min.
1	Smite Changed 8 ranks · 1, 6, 14, 22, 30, 38, 46, 54	Smite an enemy for 15 to 20 Holy damage. 20 Mana · 30 yd range · 1.5 sec cast	Smite an enemy for 16 to 20 Holy damage.
4	Shadow Word: Pain Changed 8 ranks · 4, 10, 18, 26, 34, 42, 50, 58	A word of darkness that causes 30 Shadow damage over 18 sec. 25 Mana · 30 yd range · Instant	A word of darkness that causes 30 Shadow damage over 18 sec.
6	Power Word: Shield Changed 10 ranks · 6, 12, 18, 24, 30, 36, 42, 48, 54, 60	Draws on the soul of the party member to shield them, absorbing 48 damage. Lasts 30 sec. While the shield holds, spellcasting will not be interrupted by damage. Once shielded, the target cannot be shielded again for 15 sec. 45 Mana · 40 yd range · Instant · 4 sec cooldown	Draws on the soul of the party member to shield them, absorbing 48 damage. Lasts 30 sec. While the shield holds, spellcasting will not be interrupted by damage. Once shielded, the target cannot be shielded again for 15 sec.
8	Fade 6 ranks · 8, 20, 30, 40, 50, 60	Fade out, discouraging enemies from attacking you for 10 sec. 40 Mana · Instant · 30 sec cooldown	Unchanged
8	Renew Changed 10 ranks · 8, 14, 20, 26, 32, 38, 44, 50, 56, 60	Heals the target of 45 damage over 15 sec. 30 Mana · 40 yd range · Instant	Heals the target of 45 damage over 15 sec.
10	Confounding Flash New Gnome	Confuses up to 5 enemies within 8 yds for 3 sec. Any damage taken will break the effect. 3% of base mana · 0.5 sec cast · 2 min cooldown	Did not exist
10	Desperate Prayer Changed 7 ranks · 10, 18, 26, 34, 42, 50, 58 Dwarf	Instantly heals the caster for 144 to 183. Instant · 10 min cooldown	Instantly heals the caster for 148 to 184.
10	Divine Grace New 7 ranks · 10, 18, 26, 34, 42, 50, 58 Human	Instantly heals a friendly target below 50% Health for 144 to 183 and removes Weakened Soul from that target. Cannot be cast on self. 40 yd range · Instant · 10 min cooldown	Did not exist
10	Hex of Weakness Changed 6 ranks · 10, 20, 30, 40, 50, 60 Troll	Weakens the target enemy, reducing melee attack power by 43 and reducing the effectiveness of any healing by 20%. Lasts 2 min. 35 Mana · 30 yd range · Instant	Weakens the target enemy, reducing damage caused by 2 and reducing the effectiveness of any healing by 20%. Lasts 2 min.
10	Mind Blast Changed 9 ranks · 10, 16, 22, 28, 34, 40, 46, 52, 58	Blasts the target for 40 to 44 Shadow damage, but causes a high amount of threat. 50 Mana · 30 yd range · 1.5 sec cast · 8 sec cooldown	Blasts the target for 42 to 46 Shadow damage, but causes a high amount of threat.
10	Resurrection 5 ranks · 10, 22, 34, 46, 58	Brings a dead player back to life with 70 health and 135 mana. Cannot be cast when in combat. 75% of base mana · 30 yd range · 10 sec cast	Unchanged
10	Starshards Changed 7 ranks · 10, 18, 26, 34, 42, 50, 58 Night Elf	Rains starshards down on the enemy target's head, causing 162 Arcane damage over 6 sec. 50 Mana · 30 yd range · Instant · 30 sec cooldown	Rains starshards down on the enemy target's head, causing 84 Arcane damage over 6 sec.
10	Touch of Weakness Changed 6 ranks · 10, 20, 30, 40, 50, 60 Undead	The next melee attack against the caster will cause 8 Shadow damage and reduce the attacker's melee attack power by 43 for 2 min. 25 Mana · Instant	The next melee attack against the caster will cause 8 Shadow damage and reduce the damage caused by the attacker by 2 for 2 min.
12	Inner Fire 6 ranks · 12, 20, 30, 40, 50, 60	A burst of Holy energy fills the caster, increasing armor by 315. Each melee or ranged damage hit against the priest will remove one charge. Lasts 10 min or until 20 charges are used. 30 Mana · Instant	Unchanged
14	Cure Disease	Removes 1 disease from the friendly target. 15% of base mana · 30 yd range · Instant	Unchanged
14	Psychic Scream 4 ranks · 14, 28, 42, 56	The caster lets out a psychic scream, causing 2 enemies within 8 yards to flee for 8 sec. Damage caused may interrupt the effect. 100 Mana · Instant · 30 sec cooldown	Unchanged
16	Heal Changed 4 ranks · 16, 22, 28, 34	Heal your target for 281 to 325. 155 Mana · 40 yd range · 3 sec cast	Heal your target for 307 to 353.
18	Dispel Magic 2 ranks · 18, 36	Dispels magic on the target, removing 1 harmful spell from a friend or 1 beneficial spell from an enemy. 18% of base mana · 30 yd range · Instant	Unchanged
20	Chastise New 5 ranks · 20, 30, 40, 50, 60 Dwarf	Chastise the target, causing 43 to 49 Holy damage and Immobilizing them for up to 2 sec. Only works against Humanoids. This spell causes very low threat 50 Mana · 20 yd range · Instant · 2 min cooldown	Did not exist
20	Contingency Plan New 5 ranks · 20, 30, 40, 50, 60 Gnome	Place a Holy ward on an ally for 30 sec. The next time this ally takes damage dropping their Health below 35%, they will gain a shield absorbing X damage and begin healing for X Health over 15 sec. A target may be affected by only one Contingency Plan. 30 yd range · Instant · 10 min cooldown	Did not exist
20	Dark Sacrifice New 5 ranks · 20, 30, 40, 50, 60 Undead	Cannibalize 440 of your own Health over 15 sec to gain 440 Mana. Instant · 10 min cooldown	Did not exist
20	Devouring Plague Changed 6 ranks · 20, 28, 36, 44, 52, 60	Afflicts the target with a disease that causes 128 Shadow damage over 24 sec. Damage caused by the Devouring Plague heals the caster. 215 Mana · 30 yd range · Instant · 1 min cooldown	Afflicts the target with a disease that causes 152 Shadow damage over 24 sec. Damage caused by the Devouring Plague heals the caster.
20	Elune's Grace Changed Night Elf	Reduces the chance you'll be hit by melee and ranged attacks by 50% for 15 sec or until you are missed 3 times. 3% of base mana · Instant · 5 min cooldown	Reduces ranged damage taken by 95 and increases chance to dodge by 10% for 15 sec.
20	Fear Ward Changed	Wards the friendly target against Fear. The next Fear effect used against the target will fail, using up the ward. Lasts 3 min. 100 Mana · 30 yd range · Instant · 3 min cooldown	Wards the friendly target against Fear. The next Fear effect used against the target will fail, using up the ward. Lasts 10 min.
20	Feedback Changed 5 ranks · 20, 30, 40, 50, 60 Human	The priest becomes surrounded with anti-magic energy. Any successful spell cast against the priest will burn 18 of the attacker's Mana, causing 1 Shadow damage for each point of Mana burned. Lasts 15 sec. 55 Mana · Instant · 3 min cooldown	The priest becomes surrounded with anti-magic energy. Any successful spell cast against the priest will burn 18 of the attacker's Mana, causing 1 Shadow damage for each point of Mana burned. Lasts 15 sec.
20	Flash Heal Changed 7 ranks · 20, 26, 32, 38, 44, 50, 56	Heals a friendly target for 183 to 224. 125 Mana · 40 yd range · 1.5 sec cast	Heals a friendly target for 202 to 246.
20	Holy Fire Changed 8 ranks · 20, 24, 30, 36, 42, 48, 54, 60	Consumes the enemy in holy flames that cause 56 to 70 Holy damage and an additional 20 Holy damage over 10 sec. 85 Mana · 30 yd range · 3.5 sec cast	Consumes the enemy in holy flames that cause 84 to 104 Holy damage and an additional 30 Holy damage over 10 sec.
20	Mind Soothe 3 ranks · 20, 36, 52	Soothes the target, reducing the range at which it will attack you by 10 yards. Only affects Humanoid targets level 40 or lower. Lasts 15 sec. 50 Mana · 40 yd range · Instant	Unchanged
20	Shackle Undead 3 ranks · 20, 40, 60	Shackles the target undead enemy for up to 30 sec. The shackled unit is unable to move, attack or cast spells. Any damage caused will release the target. Only one target can be shackled at a time. 90 Mana · 30 yd range · 1.5 sec cast	Unchanged
20	Shadowguard Changed 6 ranks · 20, 28, 36, 44, 52, 60 Troll	The caster is surrounded by shadows. When a spell, melee or ranged attack hits the caster, the attacker will be struck for 13 Shadow damage. Attackers can only be damaged once every few seconds. This damage causes no threat. 3 charges. Lasts 10 min. 50 Mana · Instant	The caster is surrounded by shadows. When a spell, melee or ranged attack hits the caster, the attacker will be struck for 20 Shadow damage. Attackers can only be damaged once every few seconds. This damage causes no threat. 3 charges. Lasts 10 min.
22	Mind Vision 2 ranks · 22, 44	Allows the caster to see through the target's eyes for 1 min. 65 Mana · 100 yd range · Instant	Unchanged
24	Mana Burn Changed 5 ranks · 24, 32, 40, 48, 56	Drains 198 to 211 mana from a target. For each mana drained in this way, the target takes 0.5 Shadow damage. 95 Mana · 30 yd range · 3 sec cast	Drains 199 to 211 mana from a target. For each mana drained in this way, the target takes 0.5 Shadow damage.
28	Holy Nova Changed 5 ranks · 28, 36, 44, 52, 60 Talent rank 1	Causes an explosion of holy light around the caster, causing 48 to 55 Holy damage to all enemy targets within 10 yards and healing all party members within 10 yards for 79 to 91. These effects cause no threat. Each time Holy Fire deals damage, you have a 5% chance for your next Holy Nova to cost no Mana. 290 Mana · Instant	Causes an explosion of holy light around the caster, causing 52 to 60 Holy damage to all enemy targets within 10 yards and healing all party members within 10 yards for 89 to 101. These effects cause no threat.
28	Mind Flay Changed 5 ranks · 28, 36, 44, 52, 60 Talent rank 1	Assault the target's mind with Shadow energy, causing 102 Shadow damage over 3 sec and slowing their movement speed by 50%. 70 Mana · 20 yd range · Instant	Assault the target's mind with Shadow energy, causing 126 Shadow damage over 3 sec and slowing their movement speed by 50%.
30	Mind Control 3 ranks · 30, 44, 58	Controls a humanoid mind up to level 44, but increases the time between its attacks by 25%. Lasts up to 1 min. 350 Mana · 20 yd range · 3 sec cast	Unchanged
30	Prayer of Healing Changed 5 ranks · 30, 40, 50, 60, 60	A powerful prayer that heals the target and their party for 179 to 191. Party members must be within 40 yards of target. 410 Mana · 40 yd range · 3 sec cast	A powerful prayer heals party members within 30 yards for 313 to 333.
30	Shadow Protection 3 ranks · 30, 42, 56	Increases the target's resistance to Shadow spells by 30 for 10 min. 250 Mana · 30 yd range · Instant	Unchanged
32	Abolish Disease	Attempts to cure 1 disease effect on the target, and 1 more disease effect every 5 seconds for 20 sec. 15% of base mana · 30 yd range · Instant	Unchanged
32	Binding Heal New 5 ranks · 32, 38, 44, 50, 56 Talent rank 1	Heals a friendly target and the caster for 295 to 354. Low threat. 185 Mana · 40 yd range · 1.5 sec cast	Did not exist
32	Shadow Word: Death New 4 ranks · 32, 40, 48, 56	A word of dark binding that inflicts 293 to 312 Shadow damage to the target. If your target is not killed by Shadow Word: Death, you take backlash damage equal to 10% of your maximum health. 175 Mana · 30 yd range · Instant · 15 sec cooldown	Did not exist
34	Levitate Changed	Allows the caster to levitate, floating a few feet above the ground. While levitating, you will fall at a reduced speed and travel over water-like surfaces. Mounting or any damage taken will cancel the effect. Lasts 2 min. 100 Mana · Instant	Allows the caster to levitate, floating a few feet above the ground. While levitating, you will fall at a reduced speed and travel over water-like surfaces. Any damage will cancel the effect. Lasts 2 min.
40	Divine Spirit Changed 3 ranks · 40, 50, 60	Holy power infuses the target, increasing their Spirit by 23 for 1 hour. 420 Mana · 30 yd range · Instant	Holy power infuses the target, increasing their Spirit by 23 for 30 min.
40	Greater Heal Changed 5 ranks · 40, 46, 52, 58, 60	A slow casting spell that heals a single target for 818 to 921. 370 Mana · 40 yd range · 3 sec cast	A slow casting spell that heals a single target for 924 to 1038.
40	Penance New 3 ranks · 40, 50, 60 Talent rank 1	Launches a volley of holy light at the target, causing 113 Holy damage to an enemy, or 291 healing to an ally, instantly and every 1 sec for 2 sec. 185 Mana · 36 yd range · Instant · 12 sec cooldown	Did not exist
48	Prayer of Fortitude Changed 2 ranks · 48, 60	Power infuses all party and raid members, increasing their Stamina by 56 for 1 hour. 2600 Mana · 40 yd range · Instant	Power infuses the target's party, increasing their Stamina by 43 for 1 hour.
50	Prayer of Mending New 2 ranks · 50, 60 Talent rank 1	Places a spell on the target that heals them for X the next time they take damage or receive non-periodic healing. When the heal occurs, Prayer of Mending jumps to a party or raid member within 20 yards. Jumps up to 5 times and lasts 30 sec after each jump. This spell can only be placed on one target at a time per caster. 305 Mana · 40 yd range · Instant · 10 sec cooldown	Did not exist
56	Prayer of Shadow Protection Changed	Power infuses all party and raid members, increasing their Shadow resistance by 60 for 20 min. 1300 Mana · 40 yd range · Instant	Power infuses the target's party, increasing their Shadow resistance by 60 for 20 min.
60	Prayer of Spirit Changed	Power infuses all party and raid members, increasing their Spirit by 40 for 1 hour. 1940 Mana · 40 yd range · Instant	Power infuses the target's party, increasing their Spirit by 40 for 1 hour.

New is new in Forever, Changed means the text, rank, level or cost differs from Classic, and Gone is a Classic ability the Forever trainer no longer teaches. Anything unmarked is identical in both.
The level column is where rank 1 is learnt. Later ranks are listed under the name.
Read out of the Forever client and compared against Classic Era, so this is the kit as it stands in the build, not a patch note.
An X stands where the client would put a number it works out from your own character, such as attack power or Spirit. The source publishes the formula rather than the value, so it is left as X rather than guessed at.

What changed

PenanceA channelled heal that can be aimed at an enemy for damage instead, giving Discipline its own identity.
Prayer of MendingA heal that bounces between party members as they take damage, which Classic healing had no equivalent for.
Binding HealHeals you and your target at once, which removes the worst part of healing as a Priest in Classic.
Devouring Plague and Litany of LightDevouring Plague is no longer Undead-only, and Litany of Light adds a Holy throughput cooldown.
Shadow DoTs can critShadow Word: Pain and Vampiric Touch scale with crit for the first time.