From wow.incgamers.com

Statistics

• This skill requires the Holy Nova Talent

Talent Improvements

Discipline Tree

Talent: Inner Focus
Effect: When activated, reduces the Mana cost of your next spell by 100% and increases its critical effect chance by 25% if it is capable of a critical effect.
Statistics: N/A

Talent: Mental Agility
Effect: Reduces the mana cost of your instant cast spells by a %.
Statistics: Rank 1 = -2%, Rank 2 = -4%, Rank 3 = -6%, Rank 4 = -8%, Rank 5 = -10%.

Talent: Force of Will
Effect: Increases your spell damage by a % and the critical strike chance of your offensive spells by a %.
Statistics: Rank 1 = +1% spell damage and critical strike chance, Rank 2 = +2% spell damage and critical strike chance, Rank 3 = +3% spell damage and critical strike chance, Rank 4 = +4% spell damage and critical strike chance, Rank 5 = +5% spell damage and critical strike chance.

Holy Tree

Talent: Holy Nova
Effect: Causes an explosion of holy light around the caster, causing 28 to 32 Holy damage to all enemy targets within 10 yards and healing all party members within 10 yards for 52 to 60. These effects cause no threat.
Statistics: Rank 2 and above is considered a skill, details of which can be found on the Holy Nova Skill page.

Talent: Holy Specialization
Effect: Increases the critical effect chance of your Holy spells by a %.
Statistics: Rank 1 = +1%, Rank 2 = +2%, Rank 3 = +3%, Rank 4 = +4%, Rank 5 = +5%.

Talent: Spiritual Guidance
Effect: Increases spell damage and healing by a % of your total Spirit.
Statistics: Rank 1 = 5%, Rank 2 = 10%, Rank 3 = 15%, Rank 4 = 20%, Rank 5 = 25%.

Talent: Spiritual Healing
Effect: Increases the amount healed by your healing spells by a %.
Statistics: Rank 1 = +2%, Rank 2 = +4%, Rank 3 = +6%, Rank 4 = +8%, Rank 5 = +10%.

Talent: Holy Reach
Effect: Increases the range of your Smite and Holy Fire spells and the radius of your Prayer of Healing, Holy Nova and Circle of Healing spells by a %.
Statistics: Rank 1 = +10%, Rank 2 = +20%.

Threat Level

This skill causes no amount of Threat.

Uses in PvP

Please feel free to add a bullet list of uses within PvP or editorial if you have more to say. What use is it against other builds, what skills can it be used to counteract or prevent. What skills does it work well in combination with.

Uses in PvE

Please feel free to add a bullet list of uses within PvE or editorial if you have more to say. Which creatures/bosses in particular is it useful against. What skills does it work well in combination with.