Dweomerburst

You compel a portal to take shape in any magical barrier; including shield or magic circle, and magically created walls, such as prismatic wall or wall of stone.

If the barrier was created by a spell of 5th level or lower, the portal opens automatically. For a barrier created by a spell of 6th level or higher, make an ability check using your spellcasting ability modifier. The DC equals 10 + the spell's level. On a successful check, the portal is opened.

The portal is large enough for a Medium creature to move through. It lasts until the end of your next turn, then closes abruptly. If the portal closes on a creature passing through it, the creature must make a Dexterity saving throw, taking 4d6 force damage on a failed save, or half as much on a successful one. The creature is pushed to one side of the wall (your choice).

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the portal opens automatically if the spell's level is equal to or less than the level of the spell slot you used.