Create Pit

Caster causes a small dimensional distortion, creating a pit on a solid surface within range. due to the fact that the pit itself is an extradimensional space, it can exist in areas that otherwise be impossible for it to exist, such as the wooden deck of a ship.

Make a Spell Attack against the Reflex Defence of any creature standing on the space where the pit is formed.
On a Success, that creature falls into the pit.

Once per action phase, make a Spell Attack against the Reflex Defence of any creature who steps onto a space partially occupied by the pit.
On a Success, that creature falls into the pit.

The walls of the pit are considered a Smooth surface for the purposes of climbing.

Upcast to 5: the bottom of the pit becomes covered in hard spikes, causing anyone who suffers fall damage inside of the pit to suffer an additional 2d6 Piercing damage.