User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-166.216.130.171-20130327021717/@comment-58.7.206.202-20130327142811

After fighting a monster for a certain amount of time, or take enough quick damage, your weapon power and affinity increase. Your stamina also goes down by a fifth. If you get +2 Latent Power your stamina also goes down by a fifth.

There is also a similar skill incase anyone wants to know, called Challenger. It is found on Brachiddios's armor. Challenger +1 gives you +10 affinity and Attack Up Small when the monster is in rage, Challenger +2 gives you Attack Up Large and Critical Eye +2.

The first skill is rather random but looks cool and the second also has your arm glowing and is extremely useful if you can keep your target in rage. You'll take more damage, but so will they. Its kind of like a variant of the Adrenaline Skill.