A Song of Ice

• Transform a radius of 20 feet of the ground directly surrounding you into slippery ice, trapping nearby creatures. Each creature in that area must make a Dexterity Saving Throw. On a failed save, the creature’s feet (or grounded appendages) are frozen for 1 minute, and they become restrained. On a successful save, the creatures loses half of its movement on its next turn. Any creature may make a Strength DC to break the ice and release the creature.
• Point forth your sword in any direction. Icy winds erupt from within 5 feet of you (you may place the origin within any point of 5 feet of you) and blast in that direction in a 45-foot cone for 6 seconds. When this ability is first used, unwilling creatures caught in its blast must make a Strength Saving Throw or be pushed back to the end of the cone. While the winds persist, traveling in the direction of the wind doubles your speed and traveling against halves it.
• Target 1 creature within a range of 60 feet, and freeze it in time. An unwilling creature makes a Charisma Saving Throw. If it fails, the target is frozen in time for 6 seconds. It cannot move itself, speak, and is unaware of its surroundings during this time. It cannot take damage while in this state.

While attuned to this weapon, you gain a resistance to Cold damage. If you already resisted cold damage, you become immune. Attacks that deal fire damage gain advantage against you.