Svernan's Swapparoo

You target one creature you can see within range and attempt to teleport to the location they were, while they are teleported to where you were when you cast this spell, effectively swapping places. If the creature is unwilling it must succeed on a Constitution saving throw against your spell save DC or be forced to teleport to where you were. 

When you and the targeted creature change locations, both of you teleport arriving in a small puff of blue smoke.