Wall of Ice

You create a wall of ice on a solid surface within range of the spell. You can make it a hemispherical dome or a sphere with a radius of up to 10 feet, or form a flat surface made up of ten 10-foot-square panels. Each panel must be contiguous with another. In any form, it’s 1 foot thick and lasts for the duration of the spell.

If the wall passes through an occupied space when it appears, the creature there is pushed to one side of it and must succeed on a Dexterity saving throw. On a failure, the creature takes 10d6 cold damage, or half as much on a success.

Being an object, the wall can be damaged and thus breached. Its AC is 12, it has 30 hit points per 10-foot section, and it’s vulnerable to fire damage. Reducing a section of the wall to 0 hit points destroys it, leaving behind a thin sheet of frigid air in its place. A creature passing through the frigid air for the first time on its turn must succeed on a Constitution saving throw. The creature takes 5d6 cold damage on a failure, or half as much on a success.

At Higher Levels. When you cast this spell by spending Mana points equal to a 7th-level spell or higher, the damage the wall deals when it appears increases by 2d6, and the damage from passing through the frigid air increases by 1d6, for each level above 6th. When cast as a 5th-level spell or higher, the cold damage becomes glacial.