Dream of the Blue Veil

7th-Level Conjuration
Casting Time: 10 minutes
Range: 20 feet
Components: VSM (a magic item or a willing creature from the destination world)
Duration: 6 hours

As in Tasha's Cauldron of Everything with the following added:

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, you may transport two additional creatures for each slot level above 7th.

Source: TCE 106

Changelog

Added upcasting option.