Priest · Holy · tier 4 · from level 25 · needs 5 points in Divine Fury

Searing Light

+13.8 Holy Fire

2/2 · level 60 · per cast · and 3 more

Searing Light 12

Rank 2/2

Increases your Holy damage done by 5%, and gives a 10% chance each time your Holy Fire spell deals periodic damage for your next Holy Nova to cost no Mana.

Holy Fire +5.0% +13.8 Penance +5.0% +13.5 Holy Nova +5.0% +9.1 Smite +5.0% +8.6

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