Use this build to Heal allies fast with little down-time
Sanctum of Faith
Regenerate 5% Moonlight every 1s while not using Moonlight.
Heal for 30 every time you Heal an ally with Moonlight.
Increase allies' Movement Speed by 18% while they are being Healed by Moonlight.
Regenerate 6% Moonlight every 1s while within 30 units of Luna.
Increase Luna's Health by 225.
Allies being Healed by Moonlight take 15% reduced damage.
Increase your Mount Speed by 30%.
Gain 14% Movement Speed.
Reduce the Damage you take from Direct attacks by 14%.
Reduce the Damage you take from Area of Effect attacks by 14%.
These are best for they either benefit from the speed boost (Ruam, Terminus,Vivian and Ash), the damage reduction (Inara and Ash) or the pocket healing (Andro and Evie)
These Supports can stack their buffs with yours. This can create an absolute stomp with one of the offensive paired champions
Stay in the range of your Guardian Spirit and supporting tanks while in a comfortable position the help flankers