Seraph's Embrace

+1000 Mana
+60 Ability Power
+50% Base Mana Regen

UNIQUE Passive - Insight: Grants Ability Power equal to 3% of maximum Mana.
UNIQUE Active - Mana Shield: Consumes 20% of current Mana to grant a shield for 3 seconds that absorbs damage equal to 150 plus the amount of Mana consumed (120 second cooldown).

(Unique Passives with the same name don't stack.)