Maxwell's equations, an Epic card

The card carries these facts from its Wikipedia article.

• Together with the Lorentz force law, they form the foundation of classical electromagnetism, classical optics, electric and magnetic circuits.
• The equations provide a mathematical model for electric, optical, and radio technologies, such as power generation, electric motors, wireless communication, lenses, and radar.
• Maxwell's equations have two major variants: The microscopic equations have universal applicability but are unwieldy for common calculations.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Maxwell's equations article was read about 590,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 83 and blocks with 74: each hit it takes is cut by 30 %.

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 3 hours, and the Coins you win in duels buy more packs.