Cloud of Daggers

Casting Time: 1 action - Range: 60 feet
Components: V, S, M (a sliver of glass)
Duration: Concentration, up to 1 minute
You fill the air with spinning daggers in a cube 5
feet on each side, centered on a point you choose
within range. A creature takes 4d4 slashing
damage when it enters the spell’s area for the
first time on a turn or starts its turn there.
At Higher Level: The damage increases by 2d4
for each slot level above 2nd.