As the Frost (EFA - A)

Your body transforms into the personification of ice and cold. Your skin becomes transparent, and you can see blue liquid pumping through your veins where red blood should be. Frost forms across your hands and arms, dripping down to form knifelike icicles. Your breath hisses white in the bitterly cold air surrounding you. Snow swirls about you as your presence freezes the air’s moisture. Ice crystals spread from your footprints.

You gain the following qualities and abilities:

• Immunity to cold damage

• Resistance to bludgeoning, piercing, and slashing damage from non-magical weapons

• Whenever a creature enters the area for the first time on a turn or starts its turn there, it takes 3d8 cold damage and must succeed on a Constitution saving throw or be Slowed as though affected by a slow spell for the duration