Hypnagogic Goblin Visions of crystal
I'm not allowed to say where I got this, but the documents make it clear: crystal has been on the goblin board's quarterly agenda since 1973.
A goblin tabletop GM, asked to stat crystal, produced a stat block with one ability ('exists ominously'), no listed weaknesses, and a CR of '?'. Their players consider this fair.
Footnotes Concerning whisper
whisper appears in goblin lore under many names, but the essence is always the same: a phenomenon that exists at the threshold of perception. Goblins have built entire rituals around observing whisper in its natural environment—which is to say, slightly out of view.
Goblin Reports From the network Frontier
When goblin negotiators are unable to reach agreement, they have, by long tradition, the option of invoking network. The invocation has no defined effect. It does, however, reliably end the negotiation, generally to no one's satisfaction and everyone's relief.
The Goblin Verdict on crystal
Goblin peer review of the crystal hypothesis returned three reviews: one accept, one reject, and one — the most interesting — a sketch of a goblin holding a question mark, captioned 'consider this.' The editors went with accept.