Priest · talent ability, from Penance

Penance

269per cast

Rank 4 · level 60 · before talents

Penance

385 Mana40 yd range

Instant12 sec cooldown

Launches a volley of holy light at the target, causing 92 Holy damage to an enemy, or 425 healing to an ally, instantly and every 1 sec for 2 sec.

Talents that change it, each at full ranks:

Power Infusion · with Power Infusion active +259 Power in Light · on targets with your Holy Fire +130 Spiritual Healing +130 Renewed Hope · on targets with Weakened Soul +63.8 Power Infusion · with Power Infusion active +53.9 Holy Specialization +31.9 Power in Light · on targets with your Holy Fire +26.9 Spiritual Guidance +18.1 Searing Light +13.5 Renewed Hope · on targets with Weakened Soul +13.2 Divine Aegis +9.3 Holy Precision +8.4 Holy Specialization +6.6 Spiritual Guidance +5.6 Mental Strength +1.9 Mental Strength +0.4 Improved Healing per 100 mana +59.4 Improved Healing per 100 mana +12.3

Averages, counting crits and misses, with a typical weapon and no other gear or buffs, against a target your level. Talents at level 60. Worked out from the game's own data, the same way as the Foresight addon.