Sybil's Pitfalse

An illusory pit appears in a 10 foot space within the spell’s range. The pit appears to be 10 feet deep. A creature that is in the area when you cast the spell or who steps into it on their turn must make a wisdom saving throw or take 1d6 psychic damage and fall prone. Affected creatures may not leave the area of the spell until it ends unless they are capable of flight, tunneling or teleportation, but can use their action to attempt another saving throw.

A creature who has not entered the pit can use their action to inspect it, making a wisdom saving throw. On a success, they realize the pit is fake and may enter and leave the area freely with no effects. A creature who succeeds on their saving throw may physically remove an adjacent creature from the pit by spending their action.

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the apparent area and depth of the pit increase by 10 feet and the damage increases by 1d6 for each slot level above 1st.