not sure what to do about the whole planar travel thing, but there are all sorts of other similar powers in existence. check out the MoP, maybe there's something in there?
BTW, a note about the shocker you might want to see before you get too involved in converting it. the shocker, of course, originally appeared in the 1E fiend folio. but then, when the 2E fiend folio MC came out, the shocker in that book had a completely different appearance and stats. weird huh? the PS designers must have noted this, and put BOTH of them in the PSMC3.
now of course, as i understand it, one of these shockers appeared in Return to the Temple of Elemental Evil, but the other did not. you might want to check that out before you proceed.
