Hit Die: 1d8 + 2. 

If legends are to be believed, then once this needle was used by a tribe of Storm giants, and specifically belonged to a seamstress. Beautiful and fair, she was thought to be the pearl of the sky. Though she was born with a fury to match even the most vicious of barbarians. When she married to a husband,  they vowed to each other loyalty above all else. The husband however, forgot this bond and broke it. The Giantess, her fury ignited, took out a needle from her pouch and sewed her husband to the Earth, stripping him of his Jotun pride. She'd then cast down her needle in a furious storm, her husband's blood cursing it to stitch all those who are pricked by its vile edge to the Earth that he was cursed too.  

This "dagger" consists of a large, puffy leather grip wrapped around a thin, twelve inch long, needle like blade. The hue of the blade is that of a fine silver, and though the leather is worn, the blade is not. Save for a few dark splotches along the tip. 

Special Ability: Earthbound Stitching - Once per day, the wielder of this dagger can immobilize a target via threads that appear from ground below them, regardless of terrain (Save if the target is 30+ ft. in the air). The target can make a CON saving throw on their turn to negate/rid the effects of the threads, with save DC of 15+. However, on a successful CON throw, the target now takes 2d4 piercing damage, and now has a "Bleed" effect on them. They take 2 points of damage per round.

Proficiency with a dagger allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Damage: Piercing, Long Rest, Attunable to Rogues, Bards and all Magic Classes. (No Fighters, Monks, Paladins, BHs, Barbarians, Gunslingers, Clerics.) , Damage, Control, Debuff, Movement, Combat, Finesse, Light, Thrown