Once per day, an attuned player of this enchanted slide whistle can cast grease.

Any creature that fails their Dexterity saving throw and falls prone due to the grease becomes coated in the green, soupy substance created by the spell. For the spell's duration, they make further saving throws to avoid falling prone at disadvantage. In addition, they must make a Strength saving throw to successfully interact with any object. On a failed save, they drop the object and it travels 5 feet in a random direction.

If the user of the Slip and Slide Whistle is not a spell caster, the spell save DC of the grease and its after-effects is 12.

Notes: bard, or a creature that has proficiency with any flute-like instrument