Seismic Shift

Spend 1 Action to cause tremors in a 10-meter radius area centered on a point you choose within 40 meters. The area becomes Difficult Terrain for 3 rounds. At the start of each of your turns while the spell is active, you may designate one ally within the area who is unaffected by the Difficult Terrain until the start of your next turn. All enemies within the area must make an AGI Save against Difficulty(10 + your Nature school level) at the start of their turns. On a failure, they are Immobilized until the start of their next turn.