Magic Healer

Looking for a second opinion on this build I came up with. I'm not sure if ER is the best passive for this, but like it otherwise. Thoughts, suggestions, etc. welcome.

(Unnamed Build) - Freeform
v2.3.1-25

Super Stats
Level 6: Presence (Primary)
Level 10: Intelligence (Secondary)
Level 15: Constitution (Secondary)

Talents
Level 1: The Witch (Con: 10, Int: 8, Pre: 10, Rec: 10)
Level 6: Shrug It Off (Con: 5, Pre: 5)
Level 9: Healthy Mind (Con: 5, Int: 5)
Level 12: Diplomatic (Int: 5, Pre: 5)
Level 15: Acrobat (Dex: 5, Con: 5)
Level 18: Finesse (Dex: 5, Pre: 5)
Level 21: Coordinated (Dex: 5, Int: 5)

Powers
Level 1: Eldritch Bolts
Level 1: Pillar of Poz (Rank 2)
Level 6: Aura of Ebon Destruction (Rank 2, Rank 3)
Level 8: Compassion
Level 11: Molecular Self-Assembly
Level 14: Conviction (Rank 2, Rank 3)
Level 17: Life Essence (Rank 2, Rank 3)
Level 20: Will-o'-the-Wisp (Guide, Cursed)
Level 23: Soul Beam (Rank 2, Rank 3)
Level 26: Star Barrage (Rank 2, Light Everlasting)
Level 29: Vala's Light (Rank 2, Rank 3)
Level 32: Death's Embrace (Pact)
Level 35: Imbue (Rank 2)
Level 38: Rebirth
Adv. Points: 34/36

Travel Powers
Level 6:
Level 35:

Specializations
Presence: Repurpose (2/3)
Presence: Grandeur (3/3)
Presence: Moment of Glory (3/3)
Presence: Force of Will (2/2)
Sentinel: Caregiver (3/3)
Sentinel: Sentinel Aura (3/3)
Sentinel: Moment of Need (3/3)
Sentinel: Genesis (1/2)
Vindicator: Aggressive Stance (2/2)
Vindicator: Merciless (3/3)
Vindicator: Focused Strikes (3/3)
Vindicator: Mass Destruction (2/3)
Mastery: Presence Mastery (1/1)