Each mercenary can be upgraded twice using Dragon Crystals. The first upgrade can be performed at level 20 and requires 50 Dragon Crystals. The second upgrade can be performed at level 50 and requires 100 Dragon Crystals. This process upgrades a mercenary through grades four and three, up to grade two. Subsequent upgrades require Dragon Jewel.
Crafting material for:Edit
Mercenary upgrades Edit
Dragon Crystals cannot be crafted.
Dropped by monsters