As an action, you cause a cloud of mites, fleas, and other parasites to infest a creature that you can touch or see within 18 meters which must make a Fortitude saving throw.
On a failed save, it takes 1d8 poison damage, has disadvantage on the next weapon attack roll it makes before the end of its next turn, and moves 1.5 meters in a random direction if it can move and its speed is at least 1.5 meters. Roll a d8 for the direction: 1: north, 2: north-east, 3: east, 4: south-east, 5: south, 6: south-west, 7: west, 8: north-west. This movement doesn’t provoke opportunity attacks, and if the direction rolled is blocked, the target doesn’t move.
At higher levels
This spell’s damage increases by 1d8 when you reach 9th level (2d8) and 17th level (3d8).