Rime Hydromancer

You have learned techniques to direct your hydromancy through ice and snow, and to direct cold spells through bodies of water, gaining the following benefits:

• You learn the water walk spell and cast it once without expending a spell slot or providing material components. When you cast the spell in this way, it is only capable of targeting yourself, only allows you to move across the surface of liquid water, and leaves shards of ice in your wake. You regain the ability to cast this spell in this way when you finish a long rest.
• You can treat a body of snow or ice as a body of water when casting spells with the hydromancy tag.
• When you cast a spell that deals cold damage, it gains the hydromancy tag with a hydromancy radius of 30 feet.
• While you are fully submerged in water, you have resistance to cold damage.