Trickster's String

You conjure a 10-foot strand of string-like magic between your fingers. The string is so fine as to be nearly invisible, requiring a DC 15 perception or investigation check to spot, and is supernaturally strong, requiring a DC 20 strength check to snap. The string disappears at the end of the spell's duration, or if you cast the spell again. The string moves at your command as if alive so long as you are touching part of it, and can be controlled to do any two of the following as a bonus action:

• You cause the string to glow faintly
• You can cause part or the entire length of the string to become sticky, and it may adhere one end of itself to an object or creature
• The string can tie itself to an object or creature within reach.
• The string can yank on an object or creature that it has been tied/adhered to, making any strength checks with your casting modifier.
• The string can perform delicate or complex series of specific movements, making any dexterity checks with your dexterity modifier.
• you can dismiss the string, causing it to vanish.

The length of the string increases by 5 feet when you reach 5th, 11th, and 17th level