Dregan's Not-So Avaricious Absorption

Using your power over the unholy energies you've gained, you hold your fingers outwards, gripping towards your target. Make a range spell attack against a creature within range. On a hit, the target takes 6d4 necrotic damage as the lifeforce is syphoned out of them and into a secondary "receiver" target you can see within range, restoring up to half the hit points from the necrotic damage taken rounded down.

When you cast this spell using an even spell slot above the first, the initial die is raised to a higher die for each slot level up to level 7 (3rd: 6d6, 4th: 6d8, 5th: 6d10, 6th: 6d12, 7th: 6d20); and the number of "receivers" increases by 2 for every other slot above the first (the health granted is divided as you see fit or equally between the "receivers" rounded down). 

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Example Chart:


3rd Level Slot: 6d6 ---------- 2 receivers
4th Level Slot: 6d8 ---------- 3 receivers
5th Level Slot: 6d10 -------- 4 receivers
6th Level Slot: 6d12 -------- 5 receivers
7th Level Slot: 6d20 -------- 6 receivers