So, something I was thinking about and bouncing of some people in Discord, a new shard idea.
So a Boss shard. You go to a special arena and fight just a specific boss.
for example say you use a Lich King Shard. It would spawn the Lich King, with the same difficulty as a 15 but with added mechanics. No extra health or damage, just some more crazy mechanics. After killing the boss, there would be a small chance on a specific boss reward. for example from Lich it could be a helmet transmog of his little crown.
Just a thought I had. Thoughts?