Hydrodome

You use your mana to condense water while creating it at astonishing speed, forming a dome of fast-moving water. The dome protects a cylinder 10 feet in radius and 15 feet tall around you, and this cylinder is 1 foot thick. When the dome appears, hostile creatures in the area must succeed on a Strength saving throw or be violently expelled from the dome, taking 5d6 crushing damage.

All creatures inside the dome are out of the line of sight of creatures outside it. No spell can pass through the dome, and physical attacks made across the dome’s wall are made with disadvantage.

At Higher Levels. When you cast this spell by spending Mana points equal to a 7th-level spell or higher, the crushing damage increases by 1d6 for each spell level above 6th, and the radius increases by 5 feet.