Earth Below Me

Veins of precious metals are found within the ground, and this mutation forces the same fate upon Tio. His teeth and digestive system become capable of chewing and devouring unrefined metal ores, and he develops a craving to each such ores on a regular basis (despite them tasting like ash and having no nutritional effect due to Delroth's curse: Gold Eater.) These ores become broken down and refined in his digestive system, then spreads out across his skin in a thin spiderweb-like pattern.

Approval here