Louis Bachelier, an Uncommon card

The card carries these facts from its Wikipedia article.

• He is credited with being the first person to model the stochastic process now called Brownian motion, as part of his doctoral thesis The Theory of Speculation.
• Bachelier's doctoral thesis, which introduced the first mathematical model of Brownian motion and its use for valuing stock options, was the first paper to use advanced mathematics in the study of finance.
• His Bachelier model has been influential in the development of other widely used models, including the Black-Scholes model.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Louis Bachelier article was read about 20,000 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 30: each hit it takes is cut by 12 %.

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 Louis Bachelier in the power ranking, all domains together.