Clathrate gun hypothesis, an Uncommon card

The card carries these facts from its Wikipedia article.

• The hypothesis is that changes in fluxes in upper intermediate waters in the ocean caused temperature fluctuations that alternately accumulated and occasionally released methane clathrate on upper continental slopes.
• This would have had an immediate impact on the global temperature, as methane is a much more powerful greenhouse gas than carbon dioxide.
• Despite its atmospheric lifetime of around 12 years, methane's global warming potential is 72 times greater than that of carbon dioxide over 20 years, and 25 times over 100 years.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Clathrate gun hypothesis article was read about 24,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 76 and blocks with 100: each hit it takes is cut by 40 %.

Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.

The cards just above and just below Clathrate gun hypothesis in the power ranking, all domains together.