As an action, a thin layer of ice covers the ground in a sphere centered on a point within 10 meters and turns it into difficult terrain.
When the ice appears, each creature standing in its area must succeed on a Reflex saving throw or fall prone. A creature that enters the area or ends its turn there must also succeed on a Reflex saving throw or fall prone.
A 1-meter square of ice has 3 health. The ice is an instantaneous effect, but persists as nonmagical ice. Under temperate conditions, the ice lasts 1 minute. In tropical environments, it might last only half as long. In cold environments where ice and snow persist without melting, it could last indefinitely.
You can expend 1 additional mana or psi so a number of objects equal to the mana or psi expended within the sphere that aren't being worn or carried are frozen cold for the same duration as the ice slick. A creature that touches an object covered in this ice takes 5d6 cold damage when it touches the object and at the end of each of its turns while touching the object.