Cloaking shadows

A creature of your choice that you can see within range has its shadow appear to come alive, reaching out to grab at its makers throat, pulling it to the ground and strangling it. The target must succeed on a Wisdom saving throw or fall prone, becoming incapacitated and unable to stand up for the duration. A creature with an Intelligence score of 4 or less can not be affected.

At the end of each of its turns, and each time it takes damage, the target can make another Wisdom saving throw. The target has advantage on the saving throw if it’s triggered by damage. On a success, the spell ends.