Contagious dance

You dance and strike a pose pointing at a target within range. Target must succeed a charisma saving throw or spontaneously dance. After one round the target must re roll the charisma saving throw. If failed the target will continue to dance for another round and the spell will spread to a random creature within 30ft that isn't currently or previously affected by the spell for that encounter.

When the spell has spread to a creature, it must succeed a charisma saving throw or the spell will take effect with the same rules as the initial target.

Additionaly if a target gets attacked while affected, the spell automatically stops for that creature.