"Moogle-powered assistance from your Mog House. Increases the chances of finding items when fishing."
This makes fishing up items more likely - notice that this doesn't increase your chances to fish up fish! The stronger this moghancement is, the greater your chances of fishing up items are. See Moghancements for more information.
- Also note that the Bamboo Grasses are only claimed by some to provide this Moghancement. They are otherwise listed under Moghancement: Money.