School of Soul Magic. Casting this spell requires expending a number of Soul Shards equal to the level of the spell. Any character without Soul Shards who attempts to cast this spell immediately drops to 0 Hit Points after casting it and begins making Death Saving Throws. Their Hit Points can only be increased once they have stabilized and can only be stabilized by succeeding on three Death Saving Throws. If they die while in this state, they cannot be revived by any means short of a Wish spell.

A creature you can see within range must make a Wisdom saving throw as you attempt to tether your soul to theirs. On a failure, each time the target deals damage, they take Necrotic damage equal to half the amount dealt. If this damage reduces the creature to 0 Hit Points or kills them, you gain a number of Soul Shards equal to half the level or Challenge Rating of the creature and the spell ends.

The target may spend an action to make this saving throw again, ending the effect on a success. When this spell ends, you lose 1d12 Necrotic damage for each Soul Shard you have. This damage cannot be reduced or prevented in any way.

This spell is intended for use with the Soulbreaker Wizard Homebrew Subclass.