2,950 g
This item page for Innervating Locket reflects public Arena Mayhem data for patch 26.19.
Eternity: Restore Mana equal to 15% of premitigation damage taken from champions, and Health equal to 25% of Mana spent, up to 20 Health per cast, per second.Innervate: After using an ability, restore 3% missing Health and 3% missing Mana over 3 seconds."Cast down the Noxians" – Bobdyr, Temple Guardsman