Time Disruption

Create a 10 foot radius sphere in a visible space within range.
Each creature inside takes 4d6 force damage upon cast and 1d6 force damage every turn they remain inside of it thereafter.
All targets inside have their movement speed reduced to 5 and can only take either their action or bonus action per turn.
If they pass a constitution saving throw they take half damage and their movement is halved.

At higher levels: When you cast this spell using a spell slot of 4th level or higher, the impact damage increases by 1d6 for each slot level above 3rd.