Rope of Entanglement

A  is a magical rope that can be used to restrain creatures within range.

Description
A rope of entanglement is 30 feet long and weight 3 pounds. As an action, it can be used to entangle a creature within 20 feet: the user speaks a command word, and the target must make a DC 15 Dexterity save. If they fail, they become restrained. They can, on their turn, attempt to escape with a successful DC 15 Dexterity or Strength check. Additionally, the wielder of the rope can release them as a bonus action by speaking the same command word. The rope has an AC of 20 and 20 HP, and will regenerate 1 HP every 5 minutes if damaged, unless it is brought down to 0 HP in which case it is completely destroyed.

History
Vox Machina took a rope of entanglement off the body of the erinyes they killed in the City of Brass. The erinyes had previously attempted to restrain Grog with the rope, but he had saved against the effect.

Vex first used the rope out of combat, to magically fasten Scanlan to her Broom of Flying in order to cross a hazardous ravine on the Island of Viscan. She used it again on the same island to pull Kerrek away from a glyph that had caused him to freeze in pain.

Later, Vex used the rope to catch Astra Trickfoot while the party was dangling her over the bluffs as punishment for attempting to trick Pike into believing she was cursed.

The rope was first used in combat to restrain a gloomstalker in the Crypts of Thomara as the party prepared for their battle with Vecna.

Trivia
Per the Dungeon Master's Guide the rope technically can work on creatures of any size, but Matt indicated that may not be the case with the rope Vox Machina found.