Asht’s Thousand Grasp

Dozens of arms burst forth from your body towards those in front of you. Creatures of your choice in a 30- foot cone originating from you must make a Strength saving throw. On a failed save, a creature takes 2d10 bludgeoning damage and is restrained by arms until the spell ends. On a successful save, the creature takes half as much damage and isn't restrained. A restrained creature can use its action to make a Strength check against your spell save DC. When the spell ends, the arms wither into dust. 

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the size of the cube increases by 5 feet for each slot level above 3rd.