Disciplie Best PvP Arena Tank-Healer

This build is designed for PvP Arena Healer.

*Power Word: Shield at maximum efficiency:
[Improved Power Word: Shield] increases the amount of damage absorbed by 20%.
[Twin Disciplines] increases all your Shadow and Holy spell damage and healing by 6%
[Mental Agility] reduces the mana cost of all your instant cast spells by 10%.
[Soul Warding] reduces the cooldown of your Power Word: Shield ability by 2 sec.
[Rapture]: When your Power Word: Shield is completely absorbed or dispelled you are instantly energized with 6% of your total mana. (More mana than it's cost)
[Borrowed Time] grants 14% spell haste for your next spell after casting Power Word: Shield
[Strength of Soul]: When you heal a target with Flash Heal, Greater Heal or Heal, you reduce the duration of any Weakened Soul debuff on the target by 2/4 sec. While this talent does not improve Power Word: Shield itself, multiple procs of this effect may effectively reduce the cooldown of your PW:S upon that target considerably.

Power Word: Shield is the most mana efficient Spell that an Discipline Priest can have.
The effectiveness of Power Word: Shield is not altered by [Mortal Strike] and similar healing-reducing debuffs; in these situations it can sometimes be more effective to shield your target first, rather than spam heals right away
Also spellcasting will not be interrupted by damage and it's an Instant Cast.

*Another important point of this talent try is than we have a lot of dmg mitigation.
[Inner Sanctum Spell] damage taken is reduced by 6% while within Inner Fire
[Focused Will] Whenever you are victim of an attack equal to damage greater than 10% of your total health or critically hit by any attack, you gain Focused Will reducing all damage taken by 10% lasting for 8 sec. 2 Stacks
[Inspiration] Reduces your target's physical damage taken by 10% for 15 sec after getting a critical effect from almost all healing spells.
[Glyph of Inner Fire] Increases the armor from your Inner Fire spell by 50%.

There are going to be a lot of situations where a Discipline Priest Musst "Tank" in a Arena situation and not die. Having these tallents we are going to mitigade:
90% more armor value from items
20% dmg reduction [Focused Will]
10% dmg reduction [Inspiration]
If you Have a full PvP set with an total of 20% Mele dmg reduction + Inner Fire = aprox 30% Mele dmg Reduction
Someone hit's you 20k mele dmg, and your PoM make's critt heal -->
0.3+0.2+0.1=0.6 It's 60% of dmg reduction
+ Resilence
+ Pain Suppression
Thats a lot of dmg mitigation, and great to not die xD

The Base Healing spell that we shoud use are:
*PW:S (Not an healing spell, but mitigade dmg, it's Instant cast, no Pushback +Spell haste for next spell, very mana efficient and heals 20% of total absorption (glyph))
*Flash Heal (for Strength of Soul)
*Penance (First Heal inst, very mana efficient)
*PoM
*Renew
*Desperat Prayer

Ok, think most importat think are here..

PS: Sry for my bad english