Fritz Zwicky, an Uncommon card

The card carries these facts from its Wikipedia article.

• He worked most of his life at the California Institute of Technology in the United States of America, where he made many important contributions in theoretical and observational astronomy.
• He was the first to propose supernovas as giant explosions at the end of a star's life, and neutron stars as the remnants left over after supernovas.
• In 1933, Zwicky proposed that unseen dark matter would explain the much higher mass required to explain velocity dispersion in the Coma Cluster, compared to mass calculated from luminosity data.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Fritz Zwicky article was read about 47,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 74 and blocks with 73: each hit it takes is cut by 29 %.

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 Fritz Zwicky in the power ranking, all domains together.