As a Magic action, you can unleash a burst of ice from your hands. You can use this ice to create one of the following magical effects of your choice within 5 feet of you. If an effect calls for a saving throw or ability check, the DC equals 8 plus your Constitution modifier and your Proficiency Bonus.
Black Ice
You can create a slick area of ice covering the ground in a 5-foot Emanation centered on yourself. When the ice appears, each creature other than yourself standing in its area must succeed on a Dexterity saving throw or have the Prone condition. A creature that enters the area for the first time on a turn or ends its turn there must also succeed on that save or fall Prone. This ice melts after 1 minute or if you create this effect again.
Freeze Shut
You freeze over a closed door, window, gate, container, or hatch, causing it to become stuck. A Strength (Athletics) check can force the object open again. This ice melts after 10 minutes.
Frostbite
You bombard a creature you can see with frost. The target makes a Constitution saving throw, taking 2d12 Cold damage on a failed save or half as much damage on a successful one. This damage increases by 1d12 at Warden levels 11 (3d12) and 17 (4d12).
Snowbank
You deposit enough snow and ice in a 10-foot-wide bank to provide Half Cover for two Medium creatures. This bank melts after 10 minutes.