Grasping Grave
Hundreds of skeletal arms erupt from the ground in the area, clawing at creatures within and attempting to hold them in place. The skeletal arms deal 6d6 slashing damage. Each creature in the area must attempt a Reflex save.
Critical Success The creature is unaffected.
Success The creature takes half damage.
Failure The creature takes full damage and a –10-foot circumstance penalty to its Speeds for 1 round.
Critical Failure The creature takes double damage and is Immobilized for 1 round or until it Escapes.
Heightened (+1) The damage increases by 2d6.
Traits
An action with this trait requires a degree of mental concentration and discipline.
Focus spells are a special type of spell attained directly from a branch of study, from a deity, or from another specific source. You can learn focus spells only through special class features or feats, rather than choosing them from a spell list. Furthermore, you cast focus spells using a special pool of Focus Points—you can't prepare a focus spell in a spell slot or use your spell slots to cast focus spells; similarly, you can't spend your Focus Points to cast spells that aren't focus spells.
You must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.
This indicates abilities from the sorcerer class.