Energetic Healing Chain

You create a bolt of electrical energy that arcs toward a target of your choice that you can see within range. Bolts then leap from that target to as many as three other targets, each of which must be within 30 feet of the first target. A target can be any creature that you choose, as the caster. Each target is jolted with healing electric energy and gains 2d6 hit points - any hp above max are added as temporary hp that will dissipate in one hour.  

Only one bolt from this spell can affect any individual, and further bolts will have no effect until that individual has completed a short rest.

If the spell is cast with a higher level spell slot, you can increase the number of secondary targets affected by one for each additional spell level.