Umbral Shard Eldritch Blast

You hurl a beam of crackling void energy. Make a ranged spell attack against one creature or object in range. On a hit, the target takes 1d10 Necrotic damage.

Effect: When a beam hits, you regain hit points equal to half the necrotic damage dealt (rounded down). If the target is undead or a construct, you instead deal an additional 1d6 necrotic.

Cantrip Upgrade. The spell creates two beams at level 5, three beams at level 11, and four beams at level 17. You can direct the beams at the same target or at different ones. Make a separate attack roll for each beam.