Void Wall

You create a wall of shadow, consisting of 18 5ft by 5ft tiles, each 30 feet high, placed at points you can see within range. Alternatively, you can shape the wall into a sphere up to 30 feet in diameter centered on a point you choose within range. The wall remains in place for the duration. If you position the wall so that it passes through a space occupied by a creature, the creature is transferred to one side of a wall tile of your choosing. The wall extends into the astral and ethereal plane and cannot be affected by dispel magic, counterspell, passwall, or antimagic field. You choose which creatures, spells, and objects are affected by the wall’s effects.

The wall cannot be seen through by any being, even those with dark vision, blind sense, or devil sight cannot see directly through the wall nor those with ghost vision or witches sight, as it is not an illusion or an actual physical barrier but rather the lack of one, a rip in the fabric of reality leading to a pocket dimension of absolute nothingness. Any being trying to pass through the wall or any object, or spell cannot pass through to the other side and instead fInds themselves in the center of a pocket of nothingness 30ft in radius, inside the pocket there is no gravity and it is very difficult terrain creatures only move 5/20ft if “walking/climbing”, 5/15ft if swimming, and 5/10ft if flying. Any being that escapes the wall escapes to a side of the wall specified by you. every turn a creature spends there they make a constitution save and take 4d6 force damage, 1d6 cold damage, and 1d6 necrotic damage and begin suffocating on a fail, or half as much and not begin suffocating on a pass. when the spell ends any being inside is relocated at a space within 60ft of the wall tiles that you choose or else has a chance to get trapped or transported randomly to another plane, items in the pocket when it closes are also transported randomly unless otherwise specified by you. Any being in the pocket is blinded and deafened and cannot sense vibrations and can’t cast spells that require verbal components. An antimagic field spell cast within the pocket expands to fill up the whole wall and becomes a permanent dead magic zone within the pocket, this does not however prevent this spell’s effects from taking place.