Erratic Hammering

A loud hammering sound disrupts all attempts at conversation and concentration for the duration. The hammering is spontaneous and random, thus making it impossible to make actions in sync with it. For the duration, other spells with the ritual tag that are cast within 1000ft are disrupted and can't be cast until Erratic Hammering stops. Additionally, spells with a verbal component cast within 100ft require a DC10 arcana check or fail. If concentration is maintained for the entire duration, make a DC10 constitution check. On a success, nothing happens. On a failure, you spontaneously create one piece of medium sized wood furniture of your choice and take 1 level of exhaustion.