Elhard's Broken Soul

After the first line of the spell has been chanted the piece of rotten flesh begins to float and morph into a twisted caricature of the targeted creature. The Gemstone then cuts through the flesh and attempts to sever the soul of the creature. The target must make a wisdom saving throw with disadvantage, if the creature fails the save its soul is broken and no spell other than a wish spell or true resurrection spell may bring them back from the dead. This spell also severs any connection to divine beings the target worshiped and prevents them from being resurrected by any force including those aforementioned deities for 3d4+1 hours if the creature fails its wisdom saving throw. If the creature succeeds its wisdom saving throw it must make a constitution saving throw or take 8d6 Necrotic damage, taking half damage on a successful save.

If the creature fails its wisdom saving throw the caster of this spell instantly takes 1d4-1 levels of exhaustion (To a minimum of 1) and cannot regenerate hit points for 1d4+2 days. All damage taken during this time is also doubled. If the caster of this spell dies during this period they are prevented from being resurrected for the remainder of the days.