Blizzard Pillar

You create a pillar of ice with a 5-foot radius and 30 feet tall on a solid surface within range of the spell. If the pillar is created in a space occupied by a creature when it appears, the creature must make a Dexterity saving throw. On a failure, it takes 4d8 piercing damage and falls Prone in a spot within 5 feet of the pillar.

The area within a 30-foot radius of the pillar is considered difficult terrain. Each creature that is in or enters that area must make a Constitution saving throw. On a failure, the creature can’t make more than one attack per turn and can’t take reactions or bonus actions for the duration of the spell.

Being an object, it can be damaged and thus breached. Its AC is 18, it has 45 hit points, and it has resistance to cold and fire damage, but is vulnerable to incinerating damage. When it’s destroyed, the spell ends.