The hookblade is the distinctive signature weapon introduced for Ezio in Assassin's Creed: Revelations.
The weapon combines a conventional Assassin's hidden blade with a hooked extension. Ezio uses it in Constantinople to catch ledges, swing across gaps, climb more quickly, and pull enemies or objects toward him. This gives traversal a more fluid feel than in earlier games.
The hookblade also supports combat and stealth. Ezio can use it to trip opponents, perform special attacks, and interact with ropes stretched between buildings. These functions are especially useful in Constantinople, where dense rooftops and elevated routes create many opportunities for rapid movement.
The hookblade is not the same as the rope dart, a separate weapon that appeared in Assassin's Creed III. Its defining feature is the hook attached to Ezio's bracer, making it both a climbing aid and a close-combat tool.