Destiny has yet to add a subclass that specializes on reviving and recovery allies, so I have tried to create a "Priest/Angel of Light" Subclass.
Angel of Light
High agility class with weak armor and moderate recovery.
Abilities have minor to moderate strength and moderate to long recharge rates.
Grenades
-Pulse Grenade - Sends Pulses of Light throughout a field, damaging all enemies inside the field.
-Flash Grenade - Explodes dealing minor damage but blinding all enemies in its range
-Curse Grenade - Explodes dealing moderate damage and leaves enemies with a curse dealing moderate dps for 3 seconds
Melee
-Pulse Strike - On kill, sends a pulse of Light, dealing minor damage to nearby enemies
-Flash Strike - On Hit, stuns all nearby Enemies
-Recovery Strike - On Hit, recovers health
Super
-Recovery (Base Super) - Recovers the health of nearby allies.
-Invigorate - Partially charges nearby allies abilities
-Strengthen - Gives nearby allies an overshield
-Heavenly Light - Blinds enemies near any recovered ally.
Movement
-Glide (base) - activates a thruster pack
-Focused Boost - gives a boost to inital speed
-Focused Control - Gives a boost to control
-Heavenly Flight - Blinds enemies who target you while gliding.
Attribute Modifiers
-Arcane Wisdom - Training focused on battle recovery and speed.
-Arcane Spirit - Training focused on battle recovery and toughness.
-Arcane Force - Training focused on toughness and speed
Attribute Modifiers
-Ancestral Order - Training focused on all attributes.
-Chaos Order - Training focused on raw speed.
-Divine Order - Training focused on toughness at all costs
Ability Modifiers
-Blessing of Light - Increase amount of health recovered by using Recovery
-Light of Recovery - Grenades and Melee recover minor health for nearby allies on kill
-Light Shield - Taking damage has a chance to blind nearby enemies
Class Modifiers
-Favor of Light - Decrease the respawn restriction time on guardians.
-Presence of Light - Allows you to revive guardians when respawns are restricted
-Necromancer - Revives all guardians who have an available revive when Recovery is activated