Banishment, Psionic(Expanded Psionics Handbook, p. 79)
Psychoportation [Auditory, Material]
Level: Nomad 6,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One or more extraplanar creatures, no two of which can be more than 30 ft. apart
Saving Throw: Will negates
Spell Resistance: Yes
A banishment spell is a more powerful version of the dismissal spell. It enables you to force extraplanar creatures out of your home plane. As many as 2 Hit Dice of creatures per caster level can be banished.
Augment: For every 2 additional power points you spend, this power's save DC increases by 1 and your manifester level increases by 1 for the purpose of overcoming power resistance.