Decapitating Scarf

As iron scarf, but if you succeed with your spell attack roll, the scarf wraps around the target’s neck. The target may then attempt a Constitution saving throw; failure indicates that you are able to yank the scarf and decapitate the victim. This spell works only against creatures with heads, and decapitation is only effective against living creatures (except vampires). Oozes and many aberrations have no heads and are thus immune to this spell. Constructs and most undead are not harmed by the removal of their heads, so the spell is ineffective against them.

Living creatures that make successful Constitution saves take 20d4 points of piercing damage (save for half damage) before freeing themselves from the decapitating scarf.