Quenching, an Uncommon card

The card carries these facts from its Wikipedia article.

• A type of heat treating, quenching prevents undesired low-temperature processes, such as phase transformations, from occurring.
• It does this by reducing the window of time during which these undesired reactions are both thermodynamically favorable and kinetically accessible, for instance, quenching can reduce the crystal grain size of both metallic and plastic materials, increasing their hardness.
• In metallurgy, quenching is most commonly used to harden steel by inducing a martensite transformation, where the steel must be rapidly cooled through its eutectoid point, the temperature at which austenite becomes unstable.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Quenching article was read about 40,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 59 and blocks with 32: each hit it takes is cut by 13 %.

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 Quenching in the power ranking, all domains together.