The Traveler's Guide to Aellorah
The Entropine Ettinor are of the belief that there can be no order, as all things eventually decay, and it is futile to try to bring law to the world. They revere the chaos of the Wellsprings and rejoice when they erupt. They have poor relations with the Luminari most of all.
Once per long rest, as an action, you can make a deep, chaotic humming noise which confounds those around you. For 1 minute, any skill checks made within 15 ft. of you are made at disadvantage. Additionally, those attempting to cast spells or concentrate on spells within that range must succeed on a concentration check with a DC of 10 + your proficiency bonus + your Charisma modifier. If the creature fails their concentration check, and if they were in the process of casting a spell, the spell slot is not consumed. This ability has no effect if the player is silenced or cannot make sound.