O Cuélebre
The winged serpent of the green north whose own saliva hardens into a stone that heals all ills.

In the mountains of Asturias and Cantabria, the cuélebre grows too vast for its cave, guarding treasures and enchanted xanas (the Asturian cousins of the mouras). Its scales harden with age until no weapon bites; yet its own saliva crystallizes into a magic stone that cures every illness. On the eve of San Xuan — midsummer — its enchantments can be broken. An aging dragon whose body secretes the very medicine the world needs: the shadow, producing the gift.
The SGE Reading
Gift secreted by shadow: the healing substance is manufactured inside the feared body, nowhere else.
Canon Resonance
Companion doctrine to 'the sword inside the dragon': the cure's address is inside the creature we avoid.
A Micro-Practice
Ask of your hardest trait: what does this armor secrete that could heal someone — starting with me?
Sources & Respect
Asturian and Cantabrian folklore collections.