Grasp of the Dead

At 9th level, you can cause a swarm of skeletal arms to burst from the ground to rip and tear at your foes. The skeletal arms erupt from the ground in a 20-foot-radius burst. Anyone in this area takes 1d6 points of slashing damage per sorcerer level. Those caught in the area receive a Reflex save for half damage. Those who fail the save are unable to move for 1 round. The DC of this save is equal to 10 + 1/2 your sorcerer level + your Charisma modifier. At 9th level, you can use this ability once per day. At 17th level, you can use this ability twice per day. At 20th level, you can use this ability three times per day.