The Black Citadel

You insert the bronze leaf into a small socket in the head of the staff. First there is only a crackle of electricity, and then a black sphere with a crackling silver-white electric current quickly forms around the bronze leaf until the leaf disappears inside the newly formed globe. You try to touch the electric globe but your fingers pass straight though the surface without any ill effect to yourself or any change in the globe. You now have the following globe with all the spells it contains:

Globe of the Cosmos
Spell of Fireball x2
Spell of Levitation
Spell of Invisibility
Spell of Summon

Note: (Each spell can only be used once. Then they need some time to regenerate again).
Note: (If you discover another type of globe, the existing one in use can be removed and the new one inserted at any time, except just before or during a battle. Any extra globes are counted as backpack items).