I think he said rebuke because the fluff for Aboleths is decidedly on the deep end of the alignment pool, as it were.
Since the character is never going to actually rebuke anything, it takes almost no effort to refluff.
Character will probably be evil, which IIRC is not allowed with Sacred Exorcist.
Holy crap SirP... that's kind of depressing. So it's nearly impossible to get Rebuke without losing a CL...
New character stub:Unbodied
Feats: Practiced Manifester, Overchannel, Hidden Talent (Astral Construct), Mindsight
MO: Hide in the ground/walls and send AC's after your enemies.