The Frozen Greatsword is a tier 2, level 33 greatsword that is obtained in World 3 Missions with a 6% drop chance. It has 597 Attack.
Common - Tier 1 (Grey color)
Uncommon - Tier 2 (Green color)
Rare - Tier 3 (Blue color)
Epic - Tier 4 (Purple color)
Legendary - Tier 5 (Orange color)