Instructions
Travel to the Lynari Desert. On the first area of the desert, run all the way north until you see two cacti. Cast a "Thunder" spell on the larger of the two cacti. If done correctly, you should see a cut scene.
Head southeast from the cacti until you see a small tent. Cast "Gravity" on the tent. You should see a cut scene afterward.
Travel southeast from the tent, hugging the rock wall, until you see a mushroom-shaped rock on a ledge. Cast a "Fire" spell on the rock to see another cut scene.
Run west from the mushroom-shaped rock until you encounter smoother sand (you will see its color change). Once you encounter the smoother sand, start heading north until you come across three rocks grouped together but slightly spread apart. Cast a "Blizzard" spell on each rock from smallest to largest. Another cut scene will play.
Travel south from the rocks until you hit an impassable ridge. Hug the wall of the ridge and continue heading south until you see a pink flower. Cast "Holy" on the flower. Dip you chalice in the hotspot that appears to change your element to unknown.