Konstantin Mereschkowski, a Common card

The card carries these facts from its Wikipedia article.

• 23 July] – 9 January 1921) was a Russian biologist and botanist, active mainly around Kazan, whose research on lichens led him to propose the theory of symbiogenesis – that larger, more complex cells evolved from the symbiotic relationship between less complex ones.
• He presented this theory in 1910, in his work, The Theory of Two Plasms as the Basis of Symbiogenesis, a New Study of the Origins of Organisms, although the fundamentals of the idea had already appeared in his earlier 1905 work, The nature and origins of chromatophores in the plant kingdom.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Konstantin Mereschkowski article was read about 11,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 61 and blocks with 46: each hit it takes is cut by 18 %.

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The cards just above and just below Konstantin Mereschkowski in the power ranking, all domains together.