This may be a variation of the Engorgement Charm due to the incantation for the aforementioned spell being the first part of this incantation. The Redactum Skullus spell can be used to reverse the growth, shrinking the target's head.
- The word engorge means "to fill to excess".
- The word skullus is probably an adaptation of the English noun skull.
- Harry Potter and the Half-Blood Prince (Possibly indirectly mentioned)
- LEGO Harry Potter: Years 1-4 (First appearance)
- LEGO Harry Potter: Years 5-7