-Mana pools are fixed at 300k. The gnome racial and certain meta gems can increase this number.
-Intellect no longer affects regen, giving only spell power and critical strike chance.
-Spirit is mana regen for everyone (reminiscent of mp5).
-Rapture returns are based on your Spirit.
-Atonement and Archangel are now baseline for discipline priests.
-Evangelism is now baseline for all priests.
-Divine Fury is a passive, baseline ability for all priests. (Guaranteeing chance to hit with Smite, Holy Fire, Penance and PW:Solace)
-Archangel no longer returns mana, but the healing bonus has been increased.
-Penance now triggers an Atonement heal if used offensively, and gives a single stack of Evangelism.
-Divine Hymn is no longer available to Discipline and Shadow priests.
-Discipline priests have Spirit Shell instead. Knowledge of boss encounters will be vital in the effective use of Spirit Shell, but the ability can also be used on a smaller scale as an alternative to PW:Shield spamming for stacking shields on a party.
-Inner Focus is changed from removing the mana cost and increasing the crit chance of the next heal, to reducing the mana cost and guaranteeing a critical heal from the next eligible heal.
-Binding heal can no longer benefit from Inner Focus.
-Our dispel mechanics have changed:
-Purify (our friendly dispel and cure disease together) has an 8 sec. cooldown.
-Dispel Magic (the offensive dispel) has no cooldown.
-Mass Dispel has a 15 sec. cooldown.
-The Sinestra and Spine of Deathwing encounters have been adjusted to accommodate the new dispell mechanics.
-The Blood Corruption debuffs in the Spine of Deathwing now turn to the buffs after the first dispel.
-Dispelling Sinestraâ€™s Wrack resets the cooldown of Purify, leaving the execution of the encounter unchanged.
Stat priorities for both discipline and holy will be very similar to what holy priests were doing at the beginning of Cataclysm.
-Stack spirit until you are comfortable with your mana regen.
-Haste to your chosen breakpoint.
-Holy priests and Disc tank healers will favor mastery.
-Disc priests will enjoy crit for the DA gains, holy does not gain as much from crit.
The old talent trees are gone, replaced with a completely new talent system. Every 15 levels a new tier of 3 talents is unlocked, and we choose one from each set. Each tier has a â€œtheme.â€
[TABLE](15) Control|Void Tendrils | Useful cc for questing
|Psyfiend | semi-random, single target fear
|Dominate Mind |mind control that works on everything but mechanicals. fun!
(30) Movement| Body and Soul | we are used to this, but now disc priests can spam it
|Angelic Feather | placed with targeting circle, useable by anyone
|Phantasm | pvp talent
(45) Mana| From Darkness, Comes Light |mana conservation rather than mana restore, made for single-target healing
|Mindbender |replaces shadow fiend (so if you donâ€™t choose this you still get SF), shorter cooldown means better returns for fights that donâ€™t divide up neatly for SFâ€™s cooldown
|Power Word: Solace |disc priests will find this mechanic familiar; greatest potential for mana returns, greatest effort required
(60) Defense| Desperate Prayer |good old reliable
|Spectral Guise |pvp/questing
|Angelic Bulwark |could easily see situational use for certain fights, passive so you don't need to remember to use it
(75) Throughput| Twist of Fate |another for certain situations/fight mechanics
|Power Infusion |self-only now
|Divine Insight |very interesting, should be very useful for both holy and disc[/TABLE]
The glyph system has changed as well, with only Major and Minor glyphs remaining.
A few highlights:
[TABLE]Glyph of Holy Nova | where holy nova went (no longer baseline for priests)
Glyph of Holy Fire|now instant! (still consumes borrowed time, does not benefit from inner will)
Glyph of Penance | cast while moving (at increased mana cost)
Glyph of Lightspring| making lightwell obsolete since 2012 [/TABLE]
(a few raids will probably be coordinated enough to use lightwellâ€™s ability to deliver all the healing at one time to good effect (lightspring doles out its healing at one heal per second), but most wonâ€™t bother)
More discussion of all these things is coming, this is just a quick overview to get people started in the right direction.