Note that Schism is a lot worse than 3.0 Haste. The big difference is that the schismed mind is 6 levels lower than you, so it can't use your three highest levels of powers, and it can't augment/metapsi powers as much either. It also doesn't give you the AC bonus (which was +4 in 3.0), it doesn't give you an action in the round you manifest it, and it's one level higher (and on a discipline power list).Thanee said:Schism --> Well... there was a reason why they changed Haste.
All of that doesn't make Schism a sucky power, but it's nowhere near as powerful as 3.0 Haste. Haste could double your damage output, schism will at best increase it by 70% (20th level psion using schism to manifest a power augmented to 14 PP). A sorcerer or wizard can get similar damage increases by Empowering their spells, which costs a lot less.