Coin debasement

[Nikixos]

Where is the Coin Debasement skill? what unlocks it?
Also i'm forging 250 silver per bar and it doesn't leave any scents.
edit: sipo answered me already close if you want

[Kandarim]

for the record: coin debasement allows you to combine a silver bar with a common metal one for a total of 500s. As this results in non-pure coins you're effectively taking part in fraud and deserve the 3-month scents you spawn