Skills:

Renew Mana - Max every level.

Mana Attractor - Set to half of the max for every level.

Casting Consentration - 100. Only raise after when you get interrupted.

Climbing - Highest you will need is 600 that I have come across.

Hiding - 30 So you can hide from other players.

All other skills are personal refrence like Run Speed, Perception etc. Bandaging and Recovery are completely useless to Priests. Use potions if needed.

Gear while leveling:
Max Health - Gives you a health boost.
Max Mana - Increases your mana pool.
Wisdom/Magic Damage - Increases Damage from spells (Supposedly)
Mana/Health/Stam Regen - Increases the rate of regeneration to your Stam/Mana/Health.

While solo grinding make sure to use:
S - Solo
H - Healing
I - Is
E - Easier
L - Less
D - Damage

Use a Book/Staff when grouping and not taking any incoming damage from players or NPC's for better stats.

Nastal's AoE Feat Build:

I know there is many builds out there that are playable or may excell in one area or another. I prefer to speak upon my experience rather then the experience of others.

This is my level grinding build at level 80 aoc gold. Been AoE grinding with a mixture of quests since mid 40's. I have to say this has been very easy with practice. You will be grinding most of your levels post 50.

< Some points you may not be able to put in right away. Save them untill you can. This is how the points should be spent based off amount per level. Example: 24-25 Revivication (You wont be able to put your point in at 24, wait till you hit 25 then put both in). >

Start in the Vengeance feat tree.

Vengeance:
10-14 Improved Smite
15-19 Cleansing Fire
20-23 Holy Vengeance
24-25 Revivication (2 points only)
26-28 Glowing Radiance
29 Searing Light (Wont be able to spend point untill level 30)

General:
30-33 Ether Flow

Divinity:
34-38 Lance of Mitra
39-42 Divine Lance

General:
43-44 Far-Reaching Spirit
45-47 Grace
48-51 Presence of Mind

Divinity:
52-56 Holy Accession
57 Clarity of Mind