Citadel Dwarf

You're part of a renowned mining clan that tunnels into planets, moons, and asteroids for rare minerals. You become trained in Survival. If you would automatically become trained in Survival (from your background or class, for example), you instead become trained in a skill of your choice. When you critically succeed at a Survival check to Earn Income by mining, you uncover a vein of highly valuable minerals. The next time you use Survival to Earn Income in the same location, you treat the task level as 1 higher. If you're a master in Survival, you treat the task level as 2 higher, and if you're legendary in survival, you treat the task level as 4 higher. The DC for the task remains the same.