Vampire Vine

The caster chooses 1 target and blasts that target with a dark, corrupted vine. If the vine hits, it latches on and can target up to 2 more creatures within ten feet. After hitting the target(s), the caster can target 2 more. After the chain reaction is done, each target takes 1d8 Necrotic damage and 1d8 Piercing damage. The caster heals half the total damage dealt, rounded down.