Wall of Ice 5e
You create a wall of ice on a solid piece of ground within casting distance. You can shape it into a hemisphere or a sphere (up to 10 feet in radius), or you can shape it into a flat surface made of ten 10-foot by 10-foot square plates. Each panel must be connected to at least one other panel. Regardless of shape, an ice wall is always 1 ft thick and persists until the spell ends.
Casting Time: 1 Action
Range: 120 feet
Components: V, S, M
Duration: Concentration, up to 10 minutes
If an ice wall forms through a creature’s occupied space, the creature is pushed to the side of the ice wall and must take an Agility immunity. A creature that fails the immunity suffers 10d6 points of freezing damage, and a creature that succeeds the immunity suffers half that damage.
As an object, an ice wall can be broken by damage dealt. A wall of ice has an AC of 12, has 30 life points per 10-foot segment, and is vulnerable to fire damage. When a 10-foot segment of an ice wall reaches zero life, the wall is destroyed, but a cold, bitter air is left in its place. The first time a creature passes through this chilly air in a round, it must make a physical immunity. Those who fail the immunity take 5d6 freezing damage; success halves the damage.
When casting this spell with a 7-ring or higher spell position, the damage dealt by the wall of ice when it appears increases by 2d6 for each ring you use that is higher than 6 rings, and the damage dealt when passing through the chill increases by 1d6.