Found on 4th haven scenario. You get secondary quest to find it. In nw part of map protected by angels.

Leveling and Abilities:Edit

Ability Description Level Requirement
Increases Magic Power (Light) by <5> and reduces mana cost of Light spells by <10>%. 1 N/A
+3 Leadership N/A 2
Sephiel's Voice All friendly creatures in target 3x3 area are healed for <315>. 3
+5 Magic Power N/A 4
Sephiel's Voice also charms enemy creatures in target area forcing them to skip their next turn. Sephiel's Voice is dispelled when being attacked and the creature may retaliate. 5