This homebrew was made by u/Monkey_DM on Reddit, who has given clearance for a port by me to DnDBeyond.

You create a wall of increased gravity on the ground at a point you can see within range. You can make the wall up to 30 feet long, 10 feet high, and 1 foot thick, or you can make a ringed wall up to 20 feet in diameter, 20 feet high, and 1 foot thick. The wall vanishes when the spell ends. The wall's space is difficult terrain.

Any ranged weapon attack that passes through the wall's space automatically fails, and other ranged attacks have disadvantage. Any creature that tries to pass through the wall's space must succeed a Strength saving throw or take d8 bludgeoning damage and be knocked prone.