Wall of Illusion

You create an illusion in front of you that’s 5 feet thick, 20 feet wide, and 20 feet tall. The illusion is an exact copy of everything that is behind it. However, you can have the illusion add or remove creatures and objects from it so as to make it look however you want. A creature can use an action to examine the illusion to determine if what they see is an illusion by succeeding on an Intelligence (Investigation) check against your spell save DC. If a creature discerns the illusion for what it is, the creature can see through the illusionary wall.