Choose an unoccupied point within range. In it, you create an intangible, harmless illusion of a floating, leering skull trailing black flames. The skull has a flying speed of 40 feet, though it cannot travel farther than 20 feet from its point of origin.

When you cast the spell, you must specify two conditions for the spell to be triggered. The first condition activates a message the spell speaks per the magic mouth spell. The second condition causes the skull to expel a 10-footlong jet of flame at the creature which triggered the condition. That creature must make a Dexterity saving throw, and takes 5d8 points of fire damage on a failed save, or half as much damage on a successful one.

Note the conditions can be equal, so that the skull speaks its message while at the same time firing its flame. Once the trigger for one condition has been met, the skull will not produce that effect again. Once both triggers have been met, the skull disappears.