Craft Epic Staff( Epic Level Handbook, p. 52)
[Epic, Item Creation]
You can craft magic staffs of epic power.
You can craft staffs that exceed the normal limits for such items (as stated in this book and in the DUNGEON MASTER's Guide). For instance, you could craft a staff that cast spells greater than 9th level, or a staff with an enhancement bonus greater than +5. See Chapter 4: Epic Magic Items for examples of epic staffs.