Din's Life Leach

You curse a creature within range, they must make a Constitution Saving Throw, on a failed save the target's veins turn a faint orange for one minute. Any creature that hits the target with a melee attack may heal themselves for 1 hit point, for every 4 damage dealt in the attack roll.

When you cast this spell using a spell slot of 3rd level or higher, you may target an additional creature for each slot above 2nd.