Tetzimoc's Piercing Thorn

When thrown, this dagger will dart through the air in a 5 ft line until it hits an nonliving obstacle with thickness more than a foot within 80 ft, otherwise the dagger will lose momentum and fall. creatures within the trajectory of the dagger must succeed a dexterity saving throw DC 13 or be pierced by the dagger, dealing 1d8 piercing damage.