The ROG blacksmith is located near the top of the main circle in the town center.
This is where you will do things like upgrading weapons and armour, runes, skills, making gems, socketing and even disassembling items
Skill enhancement is for your skills and runes. There is a small red and blue icon on the items equipped on you and your merc.
Only items not equipped on you or your thrall can be used to enhance items equipped, this prevents accidental using to enhance
Inlay allows a player to socket gems in sockets, only gems of the same same color of the socket, can be put in the socket
color is to change the socket color to a more suitable color
To socket a gem in a item with a socket, you need to click on socket to unlock the socket if it is still unlocked
Red is for Power : atk, ba
Green is for agility: crit and crit damage
Yellow is for constitution : maximum life, armour, dodge and elemental resistance
Blue is for intelligence : energy shield, max mana and pierce
And finally Combining
Thrall passive skills
Thrall summon cards