Psychic Hammer (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Duration:||Concentration, up to 1 minute|
You assault the mind of up to six creatures within range. Each target must make an Intelligence saving throw or take 4d8 psychic damage and be slowed. A slowed creature can make an Intelligence saving throw at the end of each of its turns. On a successful save, it is no longer slowed.