Quote Originally Posted by warrl View Post
Terror Ichor is a reagent that increases the power of fear effects.

It's made from pixie blood.

That's the only mention of pixies in the entire Compendium.

In particular, there are no pixie *creatures*. Not even in the flavor text of some spell or effect. Just this one (well, 3, for different grades) mention of pixie blood.

So where does pixie blood come from?
Repeat after me: Just because it's not in a MM doesn't mean it doesn't exist.