Spirit Spherehttps://irowiki.org/wiki/Spirit_Sphere

Floating balls of light summoned by the Summon Spirit Sphere skill. Spirit Spheres grant 3 ATK each that always hit, similar to forged weapons imbued with Star Crumb. A player can have a maximum of 5 spheres on them at one time. Certain skills use spirit spheres. A monk can transfer a sphere to another player using Spiritual Bestowment.

Some items allow you to obtain Spirit Spheres without you needing to know the summon skill. If you have an accessory with a Greatest General Card attached, you have a chance of having five spirit spheres whereas putting the Chen Liu Card into a garment gives you the ability to summon two spheres. In comparison, the Battle Aura Manteau with no card needed allows you to directly summon five spheres.

• If using a Greatest General card, you only need to keep it equipped until one sphere is generated. Then you can switch to a preferred accessory. Having at least one Spirit Sphere up will allow you to generate more as if you still had the card still equiped. This will work best for Acolyte classes and Gunslinger classes because of the bonus increased rate.