Deadly Bossmods
formerly La Vendetta Boss Mods
http://www-en.curse-gaming.com/files/details/4940/deadly-boss-mods-la-vendetta/
Very advanced bossmod, with mods to assist every high-end encounter. Much advanced upon CTRA, and better visual representation through the use of a time bar, counting down until decisive moments in encounters.

Clique
http://www.wowinterface.com/downloads/info5108-Clique.html
Clique allows you to bind keys to any actions, macros, spells etc. This is brilliant for a priest as it allows CLICK CAST healing. For example; bind right click to shield, then right click any party or raid target to shield that member. Some videos demonstrating clique’s capabilities: http://video.google.com/videoplay?d…694326108730311

Healsync
http://files.wowace.com/HealSync/ DEPENDENCIES: http://files.wowace.com/IFrameManager/
Shows you who else in your raid is casting a heal on your current target. Thus you can see all inbound heals on that target. Also shows heals inbound on yourself, and heals on your focus target.

Mendwatch:
http://wow-en.curse-gaming.com/files/details/6597/mendwatch/
MendWatch tracks your Prayer of Mending. A bar shows the current target of the Prayer of Mending spell with a countdown of how long the spell will last. When the target gets hit the amount the Prayer of Mending healed for will be shown and the bar will slowly fade away. If the Prayer of Mending jumps to a new target a new timer bar will be shown for the new target.

Decursive
http://wow-en.curse-gaming.com/files/details/3011/decursive-2-0/
Decursive makes your life easier, it clearly shows you who is afflicted by something you can remove, this is done using “Micro-unit-frames” (MUF): a micro-unit-frame is a little square on your screen that changes of appearance according to the unit status. If you click on a MUF, it automatically cast a cleaning spell, the choice of the spell depends of the mouse button you click, Decursive manages the button mapping automatically.

Shackle Watch
http://www.wowinterface.com/downloads/info6425-ShackleWatch.html
displays a timer bar counting down the duration of the Shackle

Shadowfiend Watch
http://www.wowinterface.com/downloads/info6906-ShadowFiendWatch.html
This is a simple addon that will show some statistics about the mana regened by the Shadowfiend.

KLH threat meter
http://wow.curse-gaming.com/en/files/details/4204/klhthreatmeter/
As a priest, aggro management is vital. This addon will show a grid, with a very accurate visual representation of your thread in comparrison to the rest of your raid / party. (In order to work, all party / raid should have the addon)

Sacred buff
http://wow-en.curse-gaming.com/files/details/3003/sacredbuff/
Addon for easy buffing, with enhanced options and great graphical display.

Serenity
http://wow-en.curse-gaming.com/files/details/6289/serenity/
More advanced version of SacredBuff, amongst others some very funny ressurection macros

HealBot
http://wow-en.curse-gaming.com/files/details/3802/healbot-continued/
HealBot allows for 20 key mouse combinations to cast any beneficial spells.
HealBot allows for 20 key mouse combinations to cast on disabled bars.
Any usable item can be added to all combos.
Target, Focus and Assist can be added to all combos

VampWatch
http://www-en.curse-gaming.com/files/details/5268/vampwatch/
Very nice mod to track your mana return to all party members. Theres also a Fubar Version/addition on acefiles which also tracks your shadowfiend returns.

TACTICS (GD)
http://www-en.curse-gaming.com/downloads/details/6845/tactics-gd/
Tactics addon which announces tactics for a specified mob / boss – in any instance – in the channel of your choice. Very configurable, you can add your own tactics, or edit the ones already included in the file!