There is an Artifact for each class specialization, 36 in total.
For example, Blood death knights and Frost death knights will have different Artifacts.
Players are intended to work alongside and with their champions, rather than competing with them for rewards.
A major theme of Legion will be the forging of clear and distinct identities not only for each class, but also for each specialization.
Players will also be able to earn "prestige ranks" for access to cosmetic rewards.
The intention is that players who wish to focus purely on gameplay can quickly reach the maximum power for their character, and enjoy Pv P without being at any disadvantage.
They serve as a secondary hub for players outside of the main capital of Dalaran, and allow players to command a team of champions to undertake special missions.
However, the Broken Isles - a land which 10,000 years ago was home to the then mighty night elf civilization - came with their own perils to overcome, from the demon lord Xavius and his satyr armies, to the vrykul's God-King Skovald, to the powerful nightborne night elves, and the deadly naga led by Tidemistress Athissa.
As part of this desperate search, the Kirin Tor, now led by Khadgar, moved the floating city of Dalaran to the shores of this land, with the city serving as a central hub for the efforts of the world's heroes.
With the Alliance and Horde devastated, adventurers must take up legendary artifacts and weapons used by the heroes of old, scour the ancient Broken Isles for relics of the Titans, and challenge the Burning Legion before Azeroth's last hope dies.
Following the events of Warlords of Draenor, the alternate Draenor's Gul'dan is expelled by his demonic masters into the original Azeroth with a special purpose - to reopen the Tomb of Sargeras and the gateway to Argus, commencing the third invasion of the Burning Legion, an invasion even greater than the War of the Ancients.
A key difference to garrisons is that the Class Halls are realm-wide, and will be open to all characters of that class, including characters of both factions.