Disbelieving what you cannot see

[Shostak]

Originally Posted by TippetsTX

I'm on the other side... disbelieve is described as a spell that anyone can use so I require the 'disbeliever' to focus on the target of that action. If the illusion is out-of-sight, that focus is broken.

Fair enough. Special spells, though, which I'd argue Disbelieve must be, sometimes have large areas of effect and that affect things the wizard might not even know are there. One could think of Disbelieve as a low-power version of Dispel Illusions, which does not require visual contact.