Potential energy, an Uncommon card

The card carries these facts from its Wikipedia article.

• The energy is equal to the work done against any restoring forces, such as gravity or those in a spring.
• The term potential energy was introduced by the 19th-century Scottish engineer and physicist William Rankine, although it has links to the ancient Greek philosopher Aristotle's concept of potentiality.
• Common types of potential energy include gravitational potential energy, the elastic potential energy of a deformed spring, and the electric potential energy of an electric charge and an electric field.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Potential energy article was read about 120,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 75 and blocks with 63: each hit it takes is cut by 25 %.

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 Potential energy in the power ranking, all domains together.