Warped Battlefield

You create an illusion that warps the battlefield to your advantage. This illusion is so strong and realistic, that even knowing it's real can still influence your actions and abilities. You may decide when you cast the spell how the illusion behaves and what sounds it makes. 

Physical interaction with the image reveals it to be illusory, since things can pass through it. A creature that takes the Study action to examine the image can determine that it is an illusion with a successful Intelligence (Investigation ) check against your spell save DC. If a creature discerns the illusion for what it is, the creature can see through the image, and any noise it makes sounds hollow to the creature.

The illusion spans centered from you up to a 60 feet radius. All creatures in this warped battlefield have disadvantage on checks, saves, and hits as nothing is as it seems. Selected creatures can make a wisdom saving throw at disadvantage against your spell save DC, the illusion so strong, even those aware of its ever changing capabilities cannot be discern. After each creature has spent a turn in the field may make a Wisdom saving throw against your spell DC, if it's first time doing so it's at disadvantage. After discerning the illusion, any creature must take a 1d4 penalty on their checks, saves, and hits, selected creatures do not experience this penalty. 

Any creature that is forced into this illusion in a span of 24 hours once more after experiencing one, makes all Wisdom saving throws to discern the illusion at advantage.