As two actions, you create a wall of animated, jagged, and twisted bones at a point within 20 meters for the duration. The wall can’t occupy the same space as a creature or object and doesn’t need to be vertical, though it needs a firm foundation.
If a creature would be surrounded on all sides by the wall (or the wall and another solid surface), that creature can make a Reflex saving throw.
On a success, it can use its reaction to move up to its speed so that it is no longer enclosed by the wall.
The wall is an object made of bones that blocks line of sight. A creature can move through the wall, albeit slowly and painfully. A creature must spend 3 meters of movement for every meter it moves through the wall. The wall can be damaged and thus breached. Each panel has 12 Defense, 2 Soak, and 1.5 Health per centimeter of thickness. Reducing a panel to 0 health destroys it and might cause connected panels to collapse at the GM’s discretion.
You can choose to cast this spell so the bones aren’t animated to bridge a chasm or create a ramp. If you create a span greater than 4 meters in length, you must halve the size of each panel to create supports. You can crudely shape the wall with or without animation to create crenellations, battlements, and so on.
A creature that enters the wall’s area for the first time on a turn or starts its turn there must make a Reflex saving throw.
On a failure, it takes 2d8 slashing damage and is grappled for the duration.
On a critical failure, it takes twice as much damage.
On a success, it takes half as much damage.
On a critical success, it takes no damage.
On a success, the target escapes and is no longer grappled by the bones.
If you maintain your concentration on this spell for its whole duration, the wall becomes permanent and can’t be dispelled. Otherwise, the wall disappears when the spell ends.
You can increase the damage by 1d8 for each additional mana expended.