Unique armor sets: one per variant group, each skinned over a vanilla set and recolored to its region. Any wild mob (hostile or tameable) that dies in a set-mapped zone has a 1 in 50 chance to drop a piece; of those, 1 in 10 is the zone’s unique piece (the rest are tier-scaled regional vanilla gear), so the effective unique-piece chance is ~1 in 500. A dropped piece is tier-scaled to the killed mob’s tier (its armor value and name prefix track tier; the buff is fixed), and its HP bonuses compound with your player rank. Each set now has four class helmets: Helm (melee), Hood (ranged), Hat (magic), Crown (summon), all over one shared chest + boots; the helmet you wear picks your class and boosts matching-class weapons. Completing the 3-piece set grants the themed bonus and immunity below. Sets (like the boss weapons) are also available as incursion rewards, and dropped pieces climb further at the upgrade station.