Words of Stasis

You alter time around one creature of your choice within range. The target must succeed on a Constitution saving throw or be affected by this spell for the duration. An affected target's speed is reduced by 10 ft, it has disadvantages on Dexterity saving throws,  and it can't use reactions until the end of its next turn. 

The spell affects more creatures when you reach higher levels: two at 5th level, three at 11th level, and four at 17th level.