This will be my first time playing a Warlock class and I built a concept that resulted in an Aasimar Celestial Warlock. The party has plenty of potential healers but none with a class that focuses on it quite like the Celestial.

By the looks of it, I can not determine if it is possible to be the primary healer like they want me to be with just my Celestial given Warlock abilities as a single class. With only two 3rd level slots (then 3 slots for the long forseeable future) and no Invocations what so ever that help me heal, I wont be using a lot of Cure Wounds when better offense presents itself.

Are there any Adventurer League legal builds, multiclass or otherwise, I could consider that will help me play the role of healer efficiently?

Using 27 point buy as a level 6 character.

Party composition:

* Bard/Hexblade Warlock
* Storm Herald Barbarian
* War Mage Wizard
* Rogue/Lore Bard
* Paladin