Time churn

You violently warp and churn time within a 20-foot-radius sphere centered on a point you choose within range. The area within the sphere is heavily obscured

​When a hostile creature enters the spell's area for the first time or starts its turn inside the radius, it must make a Wisdom saving throw.

​On a failed save: has its speed halved, suffers a −2 penalty to AC, and can take either an action or a bonus action on its turn, but not both. This lasts until a successful save or until the spell ends.

​On a successful save: A creature has its speed halved until the end of its next turn.

All effects end once the sphere is exited by the creature.

​At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, non-hostile creatures inside the sphere when the spell is cast gain a +2 bonus to AC, their movement speed is doubled, and they gain an additional action on each of their turns until the spell ends or the sphere is exited.