A little about me: Hello, friends. I'm Adam, commonly called Avarice. I play Ret at a very high level - 2600+ every season since reaching 2600 the first time. Before that, I was a 2200+ player from S13 - S14.
http://us.battle.net/wow/en/character/tichondrius/Inexorablex/simple - my current main
My Twitch: Twitch.TV/Aelayne
I'll be covering: talents/glyphs, basic gameplay, macros, rotation and support as well as some additional information. This guide will have enough information that should get you to know Ret on a 2k~ level.
Retribution PvP Talents are really cut and dry, by nature of the current meta, you're almost always going to have the same set up for your talent tree.
The best build right now for most teams is: Long Arm of the Law for the (15) talent. Fist of Justice for the (30) talent, Selfless Healer for the (45) talent, Clemency for the (60) talent, Holy Avenger for the (75) talent and Execution Sentence for the (90) talent. Final Verdict is my personal choice for level 100, as it just does the realest damage.
Now, a small explanation for each.
Level 15 Talent: Long Arm of the Law is a really nice 45% movement speed increase with a duration of 3 attached to your Judgment ability. Since you should be using Judgment on cooldown, you'll have a movement speed increase for a lot of the game!
Level 30 Talent: Retribution is the favorite target for almost any 3v3 team that you queue into. We're easily trainable, and have no passive defense. Fist of Justice is one of the strongest stuns in the game right now, heck, it's one of the strongest CCs.
Level 45 Talent: Selfless Healer is the one of the better two choices that you can take in this talent set. You'll be using Judgement on cooldown for a multiplicity of reasons, not the least of which is the instant cast healing that results from this talent. Sacred Shield has become a stellar option since Empowered Seals haste buff greatly effects the proc rate of SS, it also provides purge/dispell protection for HoTs, shields and other buffs. Eternal Flame is purgable and affects Word of Glory healing in a slightly negative fashion. More than any reason prior is the iconic Retribution niche of support and offhealing. Selfless healer stacks up to 3 times and increases the effectiveness of Flash of Light on party members by 20% per stack as well as reducing the mana cost and cast time by 35%.
Level 60 Talent: With Ret being as ridiculous as it is in the current meta, Clemency is your best choice. You will be able to do a ridiculous amount of healing and damage, as well as keeping your team offensive with double sacs, bops and freedoms. This is my talent of choice.
Unbreakable Spirit reduces the cooldowns of Divine Shield and Divine Protection, as well as Lay on Hands (though this isn't usable in arena) by 50%. This puts your bubble on a 2.5 Minute Cooldown and your 20/20 or 40% wall on a 30 second cd.
Hand of Purity places a Hand on the Friendly Target, reducing Damage taken by 10% as well as reducing periodic damage by an additional 80%. Fighting a heavy dot team, this is an amazing ability to use on the target upon which is being focused by the death knight, or being malefic grasped upon by the Warlock.
Level 75 Talent: There's only one real choice that a true Retribution Paladin should take! That's Holy Avenger, which is a redesigned Cataclysm Zealotry ability that makes all holy power generating abilities generate 3 Holy Power as well as increases Holy Damage or healing from those abilities by 30%.
This ability will come into play later when I describe basic gameplay, as well as macros.
Level 90 Talent: Execution Sentence is the best choice on this talent tree. Holy Prism is good as well, but Execution Sentence a) does more damage including a DoT with it's own dispell protection. b) It has a longer cooldown, leaving you free to use GCDs for other abilities like healing or damage. Personally, I use this the first thing after I pop wings and tie it into my on-use trinket, using them both together.
Level 100 Talent: Final Verdict vs Empowered Seals vs Seraphim
I personally use Final Verdict. It offers so, so, so much burst and damage, as well as letting you connect while being kited because of the 10 yard range it has (just longer than melee). I really enjoy the Empowered Divine Storm Proc it offers, as well. It increases the range and damage of your next Divine Storm by 100%!
Recently, I've been playing more Empowered Seals. It's a lot of fun to play, adding some skillcap back into Ret, however, it can feel a bit clunky sometimes. It's a lot of damage and a lot of mobility!
Seraphim is a HUGE short-term buff but it comes at a cost and rampup that really offsets the benefit, rendering it a very hard choice to make.
Empowered Seals is another talent like Seraphim - a great idea, poorly executed. The fact that ret seals are on GCD really ruins this talent for me. Even if it is a 1second GCD instead of a full 1.5seconds. Micromanagement is also a boring, but skill-ful sort of mechanic. See, a good ret should be able to get an amazing yield from a talent like this, but they sacrifice a lot of damage for it. Versus comps like Shatter and RMD, the buffs drop off a great deal. Final Verdict is all around better. With gear scaling, however, Empowered Seals seems to be becoming more of a major choice by Avengelyne and Zaul!
As of 6.1, EmpSeals is definitely a viable choice for arenas but FV is both easier to play and allows more damage to be pumped out. According to Avenge, FV is overall better but he prefers the Empowered Seals play style.