Restrict Movement

School: Spatiomancy (Homebrew)

Using your reaction to target a creature within range when it moves, you attempt to temporarily restrict their movement. The target must make a Constitution saving throw versus your spell save DC. On a failure their speed is reduced by 5 feet for 1 turn. On a success, their speed is not reduced.

The amount of feet that an affected creature's speed is reduced by, via this spell increases by 5 feet when you reach 5th Level (10 ft.), 11th level (15 feet), and 17th Level (20 feet).