|Found in||Full Moon|
The Key Sword is a weapon in the shape of a key found on the Full Moon stage. To obtain it, you will need to make your way up the mountain and reach the second shack and the Cardinal will fly to it and bring out the sword. It is possible to get the sword without the cardinal by going all the way into the shack, however you have to know where it is. The sword opens the giant door with the lock in the Animal Ark which holds the Animal Orb, the Beholder.
The Level required to wield this weapon is Level 15.