Wesley, Angel and others in “That Vision Thing”

The Host reads people's auras to set them on their path, in some shape or form that connects them to the Powers that Be. I'm thinking...

Sure, he might be able to reverse the process. That he might be able to use Cordelia in order to 'trace the call' back to the Powers.

WAY outside my area of expertise, I should caution. But hey, who knew William Shatner could sing? (He laughs, glances at a horribly disfigured Cordelia, and awkwardly stops) Okay. Bad example.