Bluetracker
Tracks Blizzard employees across various accounts.
All Spellstones are rar, except Priest,they are somehow lifted into epic proportions.
Personally i think the Priest one could end up as the most broken one. Feels like given them the epic Spellstone rarity is about given me some "pride and accomplishment" when opening it in a pack.
Mike Donais
They are all rares actually. Maybe there was an out of date one if you see it as epic.