Wednesday Boy
The Nerd WhoFell to Earth
I have one concern- as written, the Dreamwalker would SEEM to work with non-Psi powers, but there have been other bits of rules text that seemed to be broad but were subsequently erratad, like Sacrifice to Caiphon. Do you know of anything that says Dreamwalker can only use your Psionic powers?
The Compendium only specifies "a psionic attack", so I think you'll be okay.