Wyrd Reconstruction

You target one creature of your choice within 60 feet of you, and make a flow of potent and unstable necromantic magic course through their body, urging it to close and mend the wounds of the target. The target regains a number of hit points equal to 3d10 + your spellcasting ability modifier. After doing so, roll a d100. On a roll of 50 or lower, the target suffers necrotic damage equal to the level of the spell slot you expended to cast this spell at the beginning of each of their turns for 1 minute. If you roll above a 50, nothing happens.

If the target of this spell has the undead creature type, the necromantic magic has no adverse effects on them, and simply restores their hit points.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the healing increases by 1d10 for each slot level above 3rd.