Erbium, an Uncommon card

The card carries these facts from its Wikipedia article.

• A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements.
• It is a lanthanide, a rare-earth element, originally found in the gadolinite mine in Ytterby, Sweden, which is the source of the element's name.
• Erbium's principal uses involve its pink-colored Er3+ ions, which have optical fluorescent properties particularly useful in certain laser applications.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Erbium article was read about 53,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 71 and blocks with 86: each hit it takes is cut by 34 %.

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 Erbium in the power ranking, all domains together.