The fourth and seemingly last teaser for the next expansion for Hearthstone has been posted! This time we've got Dr. Boom making his appearance, but we also got a surprise in Arch-Thief Rafaam as the ringleader of this conspiracy! We'll be hoping to see what the expansion is all about very soon, so stay tuned.
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Fourth Teaser for the Next Hearthstone Expansion: The Scientist
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