Winter Orb

A large, metallic orb, which is exactly 6 inches in diameter. The surface of this orb is perfectly reflective, like a mirror. As an action while holding this orb, you may speak the command word, and choose a spot you can see within 120 feet. The orb then activates, floating into the air and moving immediately towards that area at a speed of 60 feet per round. Once in the area, the temperature around the orb begins to drop severely. Snow and ice begin to form in a 30 foot radius around the orb, and the temperature drops to freezing levels. Creatures which begin their turn in this radius must make a DC 18 Constitution saving throw, losing their ability to take bonus actions on a failed saving throw. Creatures in this radius also begin to suffer the effects of extreme cold if they are not wearing the proper outfits or are not protected in some way. The radius of extreme cold around the orb grows by 30 feet every round, at the start of your turn, until it hits a maximum radius of 360 feet.