Hearthstone: Heroes of Warcraft and other card games don't look that exciting in screenshots, but when you're sitting there, staring down a tense battle against a brutal opponent, the suspense really can build up fast. Someone's made a video that raises those stress levels to a stupid degree.

Oh, and it's NOT SAFE FOR WORK either.

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Towel yourself off, then check out these fan-made Game of Thrones Hearthstone cards for more card-based awesome.

Thanks to Keyboy for the clip, and Kotaku for the nod.