Chain Healing

Holding your holy symbol you target a creature you can see within 60 feet. A bolt of vibrant energy surges towards them, ricocheting up to 3 times to other targets of your choice. Each target must be within 60 feet of the last, and not behind total cover. Creatures may be targeted more than once by this spell, but not twice in a row. 

Each target makes a Dexterity saving throw, Healing 8d8 damage on a failed save, or taking 8d8 necrotic damage if the target is undead, or half as much on a success. Targets can choose to fail the save. 

Using a Higher-Level Spell Slot. The bolt ricochets one additional time for each spell slot level above 6.