Vanica's Mass Relocation

You create a temporal wormhole linking two locations of your choosing. Your destination doesn't have to be precise, but it is up to the DM's discretion on whether the results of your spell will be as intended if the destination specifications are not established. Your starting location does have to be precise, and specifically limited to a space that can't exceed 50 cubes, each cube being 10 feet on each side.

Once you have specified any and all cubes of your choosing, all unwilling creatures contained within the chosen cubes must make a Charisma saving throw or be instantly transported through the wormhole to the chosen destination along with all the structures and objects contained within the cubes. If a creature succeeds on the saving throw, they remain in their original space while their surroundings are replaced by those within the chosen destination. If the replaced surroundings are solid (such as if you chose to transport a building into a mountain, or a tower underground), the creature is magically forced out to the nearest available open space within range (DM's discretion).

This spell is very flexible, allowing the caster to be as creative and inventive as long as it fits within the parameters of the spell. The destination does have to be on the same plane of existence as you, but there are no other limiting factors aside from that and the limitations of the cubes. Your initial target and destination can be any amount of solid, liquid, or gaseous matter.

At Higher Levels. When you cast this spell with an 8th-level spell slot, the number of cubes is increased to 250. When you cast this spell with a 9th-level spell slot, the number of cubes is increased to 500 and your target destination may now be on another plane of existence.