I think that was kinda the point

DMG2 has something fairly similar: not quite so good on the seeing through things though- line of sight only.

The Burning Eye of Al-Ghautra. It needs a 15000 ft mountain to be placed on top of, it lights up the small area (40 ft radius) seen, gives you true seeing as the spell, and if you keep looking, the area catches fire, so you need to keep on the move unless you want to incinerate what you're looking at.