Key to the Secluded Terrace

 Key to the Secluded Terrace is an item that drops from Caiman Keybearer during Saleron's Sky Garden last boss fight.

It's used to reach the secret boss Lakernus. Killing this boss awards achievement Secret Garden and title "Secret Agent".

Caiman Keybearer spawns few minutes into last boss fight. If boss is killed too fast (like level 65 or 70 one-shotting it), Caiman never spawns. Caiman spawn is announced, and it's quite easy to kill. Key ends up in pocket of some character in dungeon party. It should be used near locking mechanism after the fight is over.

If caiman never spawns or someone steals the key, it's sellable and few copies can usually be found on trade broker.