Enhance

Every orange or higher quality items can be enhanced to improve his stats. There are 20 levels of enhancement possible, each level are costing an enhancement Stone (Stone lvl 1 for enhance lvl 1-6, Stone lvl 2 for enhance lvl 7-13 and Stone lvl 3 for enhance lvl 14-20).

The enhancement doesn't add new stats, for example a weapon who gives you only damages and critical bonus will only have a boost of damages and critical chance.

The Enhancement Stones lvl 1 can be found in the Burning Barrens Pack, and by signing in during 25 days in the same months.

Enhancing has a chance to fail, here is the logic of the success rate :

100% to lvl 1 -- 95% to lvl 2 -- 90% to lvl 3 -- .......... -- 10% to lvl 19 -- 5% to lvl 20.

It's possible to use Lucky Stones to improve the chance to succeed in order to enhance an object. Each lucky stone add 1% chance to succeed.

Some Time-Limited items become permanent when they reach enhancement lvl 12, like beowulf's amulet.