Geo-Vex

Geo-Vex is a Geomancy spell in Final Fantasy XI. When cast, a harmful Geocolure effect reduces the Magic Accuracy of all hostile creatures for as long as they are within emanation range of the caster's luopan. In order to learn this spell, the player must visit the Geomantic Reservoir located in Upper Delkfutt's Tower as a Geomancer after having learned Indi-Vex.