Boomsday wasn't actually the first set to line up legendary class cards 1 to 9, in fact we have 2 sets in a row that did it. - Album on Imgur
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A highly scientific list of absolutely every Hearthstone Boomsday card
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Cards Cut Out Of 'Hearthstone: Boomsday Project,' Including Rogue Deathrattle Shudderwock
A highly scientific list of absolutely every Hearthstone Boomsday card
Cards Cut Out Of 'Hearthstone: Boomsday Project,' Including Rogue Deathrattle Shudderwock
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11 Best Hearthstone Cards from The Boomsday Project for Standard | Hearthstone: Heroes of Warcraft