Temporal Banishment

You sever a creature’s connection to the flow of time. Choose one creature you can see within range. The target must make a Charisma saving throw (creatures that manipulate time or teleport have advantage, at the DM’s discretion).

On a Failed Save The creature is banished from time: It vanishes completely and is removed from the battlefield It cannot be targeted, damaged, or affect anything Time does not pass for it: no aging, no perception, no conditions ticking down When the spell ends, the creature reappears in the space it left (or the nearest unoccupied space) and is slowed until the end of its next turn.

If the creature is concentrating on a spell, that concentration immediately ends when it is banished from time. And resumes when it is returned.
When you cast this spell using a higher-level spell slot:
5th level: You may target one additional creature within 30 ft of the first
6th level: The slow on return lasts 1 full round
7th level: Add an additional target within 15ft.
8th level: Two more additional can be targeted within 30ft.