Needs review
Source: Epic Level Handbook

Description: You can craft staffs of epic power

Prerequisites: Epic Level, Craft Staff, Spellcraft (35 ranks), Knowledge (arcana) (35 ranks)

You can craft staffs that exceed the normal limits for such items (as stated in the Epic Level Handbook 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.