Dweomormir’s Deadweight Decree

You lay a dwarven edict upon a foe, thickening the space around them. The target must succeed on a Strength saving throw or be slowed by 20 feet (to a minimum of 0), can’t take the Dash action, and cannot benefit from Disengage against you (your opportunity attacks ignore Disengage). The creature’s flying speed becomes 0; if it is flying and can’t hover, it falls.
The creature repeats the save at the end of each of its turns, ending the effect on a success.

At Higher Levels. When you cast this spell using a slot of 3rd level or higher, you can target one additional creature for each slot level above 2nd (each target makes its own save).

Notes (DM).

• If a feature would forcibly grant Dash, the target gains no extra movement while the decree persists.

“Run all you like—the stone is on my side.” -Dweomormir Slate