Hands down: the last great expansion WoW ever did. Definitely on par with WOTLK and TBC.

The story was so epic and dark. The music was awesome and the gameplay and zones were so cool. Artifacts rocked and the buildup to seeing the big bad of WoW himself: Sargeras was done perfectly.

Loved the raids too. Tomb of Sargeras and Antorus were just so beautiful and epic to play.

Honestly, WoW should have ended when Legion finished. Metzen stepped down with this last golden egg he gave and this marked the definitive end of the Metzen Era of Warcraft. Just hasn't been the same since.

Legion marked the end of an era. And Warcraft would never be the same after this.