Compared to 3.1 version:

 No mana cost for enchantement (infinite charges) on Auriel's Bow, Auriel's Sword and anything enchanted with Auriel's Dawn.

 All magic damage x2 (Bloodcursed, Life leach and Sun damage from Auriel's Dawn doubled).

 Auriel's Sword damage increased from 15 to 17. (15 is the level of Dragonbone sword.)

 Auriel's Bow damage increased from 20 to 25. (20 is the level of Dragonbone Bow.)

 Solar flare lats 60 secondes (from 30), inflicts 88 Sun damage for each sun burst taken and 120 extra Sun damage if it's an Undead.