6th-Circle Arcane (Evocation)
Casting Time: 1 action
Range: 90 feet
Components: V, S
Duration: Concentration, up to 10 minutes
You create a vertical wall of whirling, razor-sharp blades made of magical energy within the spell’s range. You can make a straight wall up to 100 feet long, 20 feet high, and 5 feet thick, or a ringed wall up to 60 feet in diameter, 20 feet high, and 5 feet thick. The wall provides three-quarters cover to creatures behind it, and its space is difficult terrain.
When a creature enters the wall’s area for the first time on a turn or starts its turn there, the creature must make a DEX save. On a failure, the creature takes 6d10 slashing damage or half as much damage on a success.