Hogwarts schooling

This unique charm redirects magical effects to create an opening. On any area spell of 3rd level or lower that forms a line, wall, or perimeter, an opening appears in the spell's effect at a point of your choice that you can see within range and lasts for the duration. You choose the opening’s dimensions: up to 5 feet wide and 8 feet tall. For a spell of 4th level or higher on the target, make an ability check using your spellcasting ability. The DC equals 10 + the spell’s level. On a successful check, the opening is created. The opening can be dispelled at will.