Hunters Bind

Feat (Prerequisite: 4+ levels)

Ability Score Increase. Increase your Dexterity score by 1, to a maximum of 20.

Binding string: Once per turn on your turn, after making a melee weapon attack, you can attempt to attach a string of binding onto your target. To do so, you make a contested Sleight of Hand check against the targeted creature's Perception check. If you are successful, the string attaches itself. The creature can use a search action to  try and find then remove the string through a repeat Perception check based on the previous DC. While the string is attached, you are always aware of the creature's location so long as they are on the same plane of existence and no further than 100-feet from you. While you know their location in this way they cannot benefit from the invisible condition from you.

Limited supply: Due to the rarity of this technique you must make your own binding strings. At the end of a long rest you can turn 5 GP worth of string into 5 binding strings.

*Each binding string is an object with an armor class of 5 and 1 hit point. It can also function as string while being much thinner