In Aura Kingdom 2 you can equip your character with various different gears to boost their EP by a significant amount. The higher-tier of gears you equip your character the better the Attack, Critical, Defense and Evasion attributes your character will recieve from them. Listed below are the different ways in which you can upgrade your equipment.
Rank-Up
To rank-up in Aura Kingdom 2 you need to have the same gear as a material in order to increase the target gear stats with the rank-up function. When you rank-up gear you will evolve it and unleash its full potential.
Fortify
In Aura Kingdom 2 you use mana crystal to fortify your equipment, this resource can be farmed in Seven Gods Dungeon mode or obtained from quests, events, or the mall.
Inlay Gems
When you inlay gems to the equipment you will get a stat boost. Inlay Gems in the Aura Kingdom 2 can be acquired from the gem gacha (this costs blue diamonds), and from the guild store where you can exchange guild currency for gem chest.