Viking Helm

The Viking Helm is a Helm-class piece of armor found in Golden Sun: The Lost Age and Golden Sun: Dark Dawn. In The Lost Age, it is found in a treasure chest in Champa, hidden in the center of a circle of stone near the town's entrance and accessible only by casting the Reveal Psynergy at the stones to reveal the chest. The Viking Helm features a high defense rating of 30, and it increases the wearer’s Mercury Resistance by 30. It is bought for 4000 coins while its resale value is 3000 coins.

The Viking Helm, as a Helm-class item, is wearable by Felix and Piers, and Isaac and Garet once they join the party. It can first be found when you first enter Champa, which can happen as soon as you get the Lemurian Ship to explore the Great Eastern Sea with, and at that point it is an excellent piece of armor for either of your warrior Adepts to equip. It should be equipped before considering shopping at Champa, and before going to the dungeon Aqua Rock which has a lot of enemies that are Mercury-based.