Way of the Arena is a craftable set available in all armor types. The 5-piece set bonus reduces the cost of Break Free by 40%.
Way of the Arena is part of the base game. The crafting station is located in Craglorn (Lanista's Waystation). You can craft any armor, weapon or jewelry of this set in any motif style you know, as long as you have 8 traits researched (per item). You can trade crafted pieces to other players. Each set item becomes bound on equip.