Curse of Annoying Mule

This curse is bestowed vocal but any spellcaster unintentionally by calling the target in reference to a posterior or mule. As a cantrip it does not require any spell slots or intentions to cast the spell verbally. The spellcaster must know, read, or heard mention that the indestructible mule exists in order to accidentally cast the spell.

(Daily feed it for 7 days or scare it off DC 29 or higher will remove the curse from the target creature.)

The cursed will be followed by an annoying medium sized immortal, invulnerable, inrestrainable mule that constantly shouts. It won't shut up unless petted or scratched or fed. Things like rains saddle and saddlebags will not stay on the mule for long and are magically detached within hours or minutes. The mule does not level up or use any supernatural or magical forces. The mule will always remain at the side of the one who is cursed. The mule will instantly kick off or magic will dismount any rider from the mule especially the cursed. And this mule will not obey any commands. When satisfied or dispelled the mule will leave quietly and quickly. 

(the indestructible mule is a medium size draft horse that is invulnerable, inrestrainable, an immune to all damage magical or otherwise. It cannot be charmed but it can be frightened and leaves on the first stage of frightened. The mule can magically hover at the same speed of its walk speed. And can teleport if left or tied up for an hour right next to an adjacent square of the targeted cursed.)

"No one knows if the mule is a demon or a god. But it seems to not age and be invulnerable to all kinds of forces. The origin of this curse remains unknown. But when irony strikes. Or when a spellcaster use the wrong words. This mule came to be. No one knows how the mule encounters the cursed."  - Experienced & Confused Wizard.