Wobbling Rustcaps

Wobbling Rustcaps are mushrooms that produce a strong oxygen supply underground and require no light. They are not harvested easily, and often disintegrate when touched, but their spores will affix themselves to almost any surface (except platinum, gold, silver and copper) and be carried far off. In the absence of light, the mushroom consumes groundwater, converting the hydrogen into energy needed to sustain itself and leaving behind an abundant supply of oxygen. Rustcap dust makes excellent tinder and is useful for starting fires in the rain.