Litany of Torpor
Casting Time: 1 bonus action
Range: 60 feet
Duration: Concentration, up to 1 minute
You call on sacred energy to ensnare a foe with wispy tendrils. A creature with range than can hear you must make a Wisdom saving throw. On a failed save, its movement speed is halved and it can’t benefit from any bonus to its speed. At the end of each of its turns in which it voluntarily moves at least 1 foot, it must make another Wisdom saving throw. On a failed save, it takes 4d8 radiant damage. On a successful one, it takes 2d8 radiant damage and the spell ends.