Cordon (of) Arrows

You plant four pieces of nonm agical ammunition—arrows or crossbow bolts—in the ground within range and lay m agic upon them to protect an area. Until the spell ends, whenever a creature other than you comes within 30 feet of the ammunition for the first time on a
turn or ends its turn there, one piece of ammunition flies
up to strike it. The creature must succeed on a Dexterity
saving throw or take 1d6 piercing damage. The piece of
ammunition is then destroyed. The spell ends when no
ammunition remains.
W hen you cast this spell, you can designate any
creatures you choose, and the spell ignores them.
At Higher Levels. W hen you cast this spell using
a spell slot of 3rd level or higher, the amount of
ammunition that can be affected increases by two for
each slot level above 2nd.