Undead Grafting

This dark ritual allows a caster to go down a path from which there is no return. Through this ritual, the caster cuts off his arm and replaces it with an undead prosthetic, which may be skeletal in form or preserved flesh stitched in place like that of a flesh golem. Regardless of its composition, the graft grants a permanent +3 bonus to the character's Strength score. Once this spell has been cast and the changes made to the caster, the spell cannot ever be cast again on the same target nor can the changes be undone.

Additionally, the undead graft allows him to deliver horrible melee spell attacks. Once the spellcaster is changed, they can use this ability once, regaining it after a long rest, at 7th level; twice at 9th level, and three times at 11th level. The character must declare that they are using this ability before making the attack roll; a failed attack roll still expends that use of the ability. Each time he makes a melee spell attack using this ability, the caster can select from any of the effect described below for which he meets the prerequisite class level. The save DC for the melee spell attack is 8 + proficiency bonus + spellcasting modifier.

Paralyzing Touch: A target hit by this melee spell attack takes 2d6 necrotic damage and must succeed on a Constitution saving throw a be paralyzed until the end of its next turn.

Degenerative Touch: A target hit by this melee spell attack takes 4d6 necrotic damage and must succeed on a Dexterity saving throw or take an additional 4d6 necrotic damage. The target takes no additional damage on a successful save.

Weakening Touch: A target hit by this melee spell attack must succeed a Strength saving throw or take 1d6 points of Strength damage. A creature reduced to a zero Strength score dies. This reduction in Strength lasts until the target takes a short or long rest. Prerequisite: Class level 9th.

Destructive Touch: A target hit by this melee spell attack must succeed on a Constitution saving throw or take 1d6 points of Constitution damage. A creature reduced to a zero Constitution score dies. This reduction in Constitution lasts until the target takes a short or long rest. Prerequisite: Class level 9th.

Deathless Master's Touch: A living foe hit by this touch attack must succeed on a Constitution saving throw or take 3d8+10 necrotic damage on a failed save, or half as much damage on a successful one. A humanoid killed by this attack rises at the start of your next turn as a zombie and is permanently under your command. Prerequisite: Class level 11th.