Lasso
A lasso, also called a lariat, is a length of rope with a loop at one end, tied with a knot that enables the loop to be tightened.
The wielder twirls the lasso and throws the loop at the intended target. If it hits, the lasso has encircled the target, enabling the attacker to dismount the victim, make him fall, pin him, strangle him, etc.
A successful roping does not cause damage to the target, but damage can occur from the results of certain actions performed with the lasso, such as making someone fall or strangling a victim.