A kind of weird tweet went out on some of the official Hearthstone Twitter accounts (here and here). It displays an eyeball that looks like C'Thun‘s that is being showered with water. The tweets when translated say essentially “only use in case of emergency” which lines up with your typical eye wash station warning.
Keep in mind that the previous thing we thought was a clue, ended up being for something else entirely!
Update: Looks like the official English Hearthstone Twitter is getting into the game with this teaser:
This one adds a bit more detail with the mention of elemental damage.
What does this all mean? Well, in World of Warcraft there’s a Netherstorm area from Burning Crusade. the capital of Netherstorm is Tempest Keep, and within the Tempest Keep is the 25 man raid, The Eye.
This lines up very nicely with the predictions about the next expansion involving Ethereals, because near the Tempest Keep you will find the portals that are featured in the expansion teasers! Thanks to Tharid for the help with these lore insights!
Here’s a look at the expansion teasers in case you forgot: