John Mauchly, an Uncommon card

The card carries these facts from its Wikipedia article.

• Together, Mauchly and Eckert started the first computer company, the Eckert–Mauchly Computer Corporation, which allowed them to further the development of fundamental computer concepts originally conceived by members of the 1945-46 ENIAC programming team, notably Jean Bartik and Kay McNulty, including subroutines, nesting, and the first low-level assembler.
• They also popularized the concept of the stored program, which was formalized in John von Neumann's widely-read First Draft of a Report on the EDVAC and disseminated through the Moore School Lectures.
• These publications influenced an explosion of computer development around the world in the late 1940s.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The John Mauchly article was read about 18,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 66 and blocks with 43: each hit it takes is cut by 17 %.

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 John Mauchly in the power ranking, all domains together.