Chicken Head

You transform a the head of a creature within range into that of a chicken's.  It must succeed on a Constitution saving throw or take a -10 penalty to all Charisma checks if the head is not hidden because people can't stop laughing.  If the creature succeeds on the saving throw, then it in stead takes 3d10 force damage, as its form is temporarily and painfully morphed.  The duration of this spell is special.  The caster can't reverse it, and it remains even if the creature dies and is reincarnated into a different body, because even the victim's soul has a chicken head.  This spell also cannot be reversed by the DISPEL MAGIC spell.  If it is cast upon a chicken, then the chicken has advantage on the saving throw and it's head is transformed into that of a duck's. The only possible way of reversing it is if a WISH spell is cast on the target.  If the spell is reversed in this way, then there is a 90% chance that the creature immediately dies and cannot be brought back from the dead by magic of any kind, and the caster of WISH is immediately killed.  The spell can also be reversed by direct divine intervention by 3 or more gods.