Skillchain Bonus is a job trait in Final Fantasy XI. It increases the bonus damage on a Skillchain by 8%, 12%, 16%, or 20%, depending on the ability's level. Skillchain Bonus I is available to Dancers at level 45, Samurai at level 78, Monk at level 85, and Ninja at level 85. Blue Mages can obtain the ability by equipping the spells Goblin Rush and Benthic Typhoon, which can be done as early as level 83. Skillchain Bonus II, III, and IV are available only to Dancers, at levels 58, 71, and 84, respectively.