Ironweed Rope
Wondrous Item,
Uncommon
(cost 200 gp)
Crafting Components
Vines from a shambling mound -
(cost 200 gp per 50 feet)
When this tough, fibrous plant is carefully woven into rope it has AC 17, 10 hit points, and resistance to bludgeoning, piercing, and slashing damage from nonmagical attacks.
Source