You imbue a 20-foot-radius circle of ground you touch with an icy trap. The trap is nearly invisible, requiring an Intelligence (Investigation) check against your spell save DC to find it. When you cast the spell, choose a trigger:

• When a creature of a type you specify enters the area or reaches its centre.
• When any creature other than ones you designate to not trigger it enters the area or reaches its centre.
• When you use your reaction to trigger it.

  When the trap is triggered, frosty spikes erupt from the ground, stabbing and trapping creatures within the area in a painful embrace. Each creature in the area when the trap is triggered must make a Dexterity saving throw. On a failure, a creature takes 2d8 piercing damage and 2d8 cold damage and is restrained for 1 minute. On a success, a creature takes half as much damage and is not restrained. A creature can use its action to make a Strength check against your spell save DC, freeing itself or a trapped creature within its reach on a success.   A creature that starts its turn restrained by the ice sees horrifying visions of its past reflected back at it and must succeed on a Wisdom saving throw or become frightened of the reflections that surround it until the start of its next turn. While frightened in this way, the creature can’t attempt the Strength check to free itself or another creature. A creature that ends its turn restrained by the ice takes 2d8 cold damage.