From wow.incgamers.com

Statistics

Talent Improvements

Holy Tree

• This skill is gained through the Divine Illumination Talent.

Protection Tree

None.

Retribution Tree

None.

Threat Level

This skill generates Negligible threat.

Uses in PvP

• Generally useful for any skills the Paladin has with a mana cost.
• Works very well together with Illumination and Divine Favor, actually gaining at least 10% of base mana cost per applicable spell that critically hits during it's duration.

Uses in PvE

• Generally useful for any skills the Paladin has with a mana cost.
• Works very well together with Illumination and Divine Favor, actually gaining at least 10% of base mana cost per applicable spell that critically hits during it's duration.

Other Facts

• While this spell does not generate threat in itself, any spells that are cast with half mana cost still generates their normal amount of threat.