My next character is an aberrant mind kalashtar who got her powers by strengthening her spiritual connection with the dreamscape. She's basically going to be a mind-spy who uses mind manipulation not only as a means for manipulating people, but mostly as a way to feed the dreaming dark the wrong information and win a secret information war - Yes, she's using mind manipulation to deliver messages. I think it's going to be awesome.

I tied it to the mechanics in more ways, including asking my DM to let me reflavor somw stuff, tying that with dream of the blue veil to make the whole idea extremely awesome to the point that I want to make a campaign around it.

If you have any evidence at all in a world on the material plane of a creature that sleeps, you can use Dream to invade its' dreams inception-style, find an "anchor object" that is a magical item thay likely exists not only in the dreamer's dream but in real life as well, recreate it in some way (probably by hand, unless you wanna homebrew the Creation spell a little to make it useful for spell components), and use THAT with dream of the blue veil. You just used mind-hacking to follow a creature to another world, in order to change its' memories to mislead brainwashingdream spirits as a secret spy in a somewhat secret cross-dimensional war. I mean COME. ON.