Wall of Spinning Daggers

You create a wall of spinning daggers on a solid surface or floating within range. You can make the wall up to 60 feet long, 20 feet high, and 1 foot thick, or a ringed wall up to 20 feet in diameter, 20 feet high, and 1 foot thick. The wall Can be seen through and lasts for the duration.

When the wall appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature takes 8d4 piercing damage, or half as much damage on a successful save.

A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. As a bonus action the daggers may be shot out of the wall in a 30ft line each creature within its area must make a Dexterity saving throw. On a failed save, a creature takes 8d4 piercing damage, or half as much damage on a successful save. Doing this destroys the wall.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d4 for each slot level above 4th.