Hans Krebs, an Uncommon card

The card carries these facts from its Wikipedia article.

• He was a pioneer scientist in the study of cellular respiration, a biochemical process in living cells that extracts energy from food and oxygen and makes it available to drive the processes of life.
• He is best known for his discoveries of two important sequences of chemical reactions that take place in the cells of nearly all organisms, including humans, other than anaerobic microorganisms, namely the citric acid cycle and the urea cycle.
• The former, often eponymously known as the "Krebs cycle", is the sequence of metabolic reactions that allows cells of oxygen-respiring organisms to obtain far more ATP from the food they consume than anaerobic processes such as glycolysis can supply, and its discovery earned Krebs a Nobel Prize in Physiology or Medicine in 1953.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Hans Krebs article was read about 28,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 72 and blocks with 78: each hit it takes is cut by 31 %.

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The cards just above and just below Hans Krebs in the power ranking, all domains together.