... 3 skill just simple buffing or healing, and 1 skill actuall change when casting but it's base on weather not geology, it's more like weathermancer than geomancer
why not make it put down a circle with various of different effect and change floor tiles visual like like PCT's circle, that buff people when they stand inside the circle, could make it share CD to make sure only 1 circle being out at time
for example: Arcane Ward of aerith in FF7 rebirth that allow whoever stand inside double cast their magic