Tasha's last laugh

You release Tasha's greatest joke. Any other creature  then you within 20 feet radius of a point you choose must make a wisdom saving throw or be affected by the spell. On a failed saving throw a creature drops everything it holds, falls to the ground, starts laughing uncontrollably and is incapacitated. At the start of each turn affected creature takes 2d8 psychic damage for the spell's duration. At the end of each turn a creature must make a wisdom saving throw, on a success, the creature is no longer affected.