Wall of Stone

You cause a nonmagickal wall of solid stone to spring into existence.

The wall is 16cm thick and is composed of 10 3m×3m panels. Each panel must be contiguous with at least one other panel. Alternatively, you can create 3m×6m panels that are only 8cm thick.

If the wall cuts through a creature’s space when it appears, the creature is pushed to one side of the wall (your choice). If a creature would be surrounded on all sides by the wall (or the wall and another solid surface), that creature can make a DEX 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 can have any shape you desire, though it can’t occupy the same space as a creature or object. The wall doesn’t need to be vertical or rest on any firm foundation. It must, however, merge with and be solidly supported by existing stone. Thus, you can use this spell to bridge a chasm or create a ramp.

If you create a span greater than 6m in length, you must halve the size of each panel to create supports. You can crudely shape the wall to create crenellations, battlements, and so on.

The wall is an object made of stone that can be damaged and thus breached. Each panel has AC 15 and 20 HP per 2cm of thickness. Reducing a panel to 0 HP destroys it and might cause connected panels to collapse at the GM’s discretion.

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.