Tower key
From Emps-World Wiki
A Tower key is required to unlock the last door on the third floor of the Slayer tower to access the Abyssal demons and Chronozon. These keys are commonly dropped by Gargoyles that can be found just before this door. Only members can acquire the key, but it is freely tradeable for any player.
Members that have at least 60 Agility will not need to have this key, as they can use the Spiky chain to the last part of the Slayer tower.
