Greater Clairaudience/Clairvoyance (3.5e Spell)

This spell behaves as Clairaudience/Clairvoyance, but it lasts much longer and possesses the following changes. You may now employ "Detect" spells through it, such as Detect Magic or Detect Evil, but not other spells like See Invisibility or True Seeing. If the chosen locale is magically dark, you see nothing. If it is naturally pitch black, you can see in a 20-foot radius around the center of the spell’s effect. Finally you may switch between audio and visual transfer as a standard action for the duration of the spell.

Focus: Two Magnets for audio output, and a Mirror or a Pool of Water for visual output.