Will o' Wisp [RS]

Summon a wispy orb with a ghostly glow that moves erratically towards its target within 60ft of you that you can see. Make a ranged spell attack against the target, dealing 2d6 necrotic damage on a hit. If the wisp dealt damage, you may redirect it to another creature within 30ft of the previous target. The wisp heals the subsequent target equal to the amount of damage it dealt previously. 

On a natural roll of 15 or higher and regardless of if the attack hit or missed the target, the wisp can damage an additional target before healing a creature. Make another ranged spell attack against a creature within 30ft of the previous target. You cannot target the same creature twice in a row but can still target it multiple times via bouncing back and forth between two creatures.

At Higher Levels. If you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.