Frostburn Slash is a skill that appears exclusively in Dragon Quest: The Adventure of Dai: A Hero's Bonds. It attacks an enemy with an enchanted ice blade.
Dragon Quest: The Adventure of Dai: A Hero's Bonds
Frostburn Slash appears as a skill for Nova and the Luminary Leader as a Hero or Warrior. It is a mid-range attack that inflicts piercing physical Ice damage over a small area. The main way to unlock the skill is by playing during Nova's recruitment event, from the shop exchange, or by obtaining an Icerock Blade from limited Treasure Hunts.
In the English version of the game, the skill was erroneously named after the recurring Frostburn monster. This is because the Frostburn's Japanese name and its original localized name is Blizzard (ブリザード, Burizādo). The skill is also unrelated to the recurring Blizzard Slash skill, which is named Blizzard Rush in Japanese.