Reactive Strings

When an enemy is behind you, the strings on your back automatically attempt to capture it. You gain the following benefits:

• Increase your Constitution, or Dexterity score by 1, to a maximum of 20.
• Any non-allied creature within 10 feet behind you must make a saving throw (DC 15). A target automatically fails on the save if it has a Two-handed or Heavy weapon. On a failed save, a target becomes restrained on your back for 10 minutes. If the strings take any damage, it can repeat the saving throw, ending the effect on itself on a success.
• You can release anything caught in your strings at any time.
• Finesse weapons, Light weapons, and Monks with Deflect Missiles can stop the strings.
• Strings will sew any wounds on any creature within range every long rest at your command (1d4).
• Strings grow up to 30ft and can grab the same capacity of the mage hand.