Ashe's Irresistible Musical

Choose any number creatures in a 40-foot-radius sphere centered on that point that you can see within range. These targets begins a seemingly choreographed song and dance number: shuffling, capering, singing and caroling for the duration. Creatures that can't be charmed are immune to this spell.

A creature caught up in the number must use all its movement to dance either without leaving its space, or only moving directly towards other creatures effected by this spell. Additionally it has disadvantage on Dexterity saving throws and attack rolls and is unable to cast spells with a verbal component. While the target is affected by this spell, other creatures have advantage on attack rolls against it. As an action, a dancing creature makes a Wisdom saving throw to regain control of itself. On a successful save, the spell ends.