SRD:Staff of Planar Might
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The wielder of this powerful staff is immune to the effects of any planar alignment traits, as well as the positive-dominant and negative-dominant traits or a plane. It also allows use of the following spells.
When using the greater planar ally power, the character must still bargain with the called creature.
In addition to its other powers, a staff of planar might is a +5 outsider bane quarterstaff (roll 1d4 to determine what alignment of outsiders the staff’s bane power works against: 1=chaotic, 2=evil, 3=good, 4=lawful). After all charges are used up from a staff of planar might, it remains a +5 quarterstaff with no special abilities.