This item has been removed from the Aether mod and there are no news of it being re-added back into the mod.
The Cloud Staff is a dungeon reward found in the Aether. When right-clicked it summons two Cloud Guardians who fly beside your head. Every time you right-click, the Guardians will each fire an ice ball at your target doing 2.5 hearts of damage per ice ball. The Cloud Staff can be used 61 times before breaking.
Trivia[ | ]
The ice balls fired by the Cloud Guardians are identical to the ones fired by the Sun God, but cannot be used to kill that boss.
Bugs[ | ]
When the Cloud Guardian is inside a wall and you right-click, the ice ball can hit you.