When you cast manna on a foe with CHANNEL it raises their odds for looting to give some treasure. This is based on the concept that gold is the original mana bread with mono atomic gold matter being powdered (relating to the Ark of the Contract/Covenant, etc.). Hence the creature affected by the gold magical energy will breed a higher chance for revealing wealth.

When EVOKED the spell will increase treasure odds by 10%. Bonuse raised by TRADING ranks +1 % per 10 ranks and by Spirit lore.