Blackboard, an Uncommon card

A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, better known as chalk.
From the Wikipedia article

Rarity: Uncommon
Domain: Society
ATK: 58
DEF: 54
Power: 112
Wikipedia reads a year: 47,000

Power 112 (ATK + DEF): stronger than 60 % of WikiCards cards.

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The facts on the card

The card carries these facts from its Wikipedia article.

Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.

Why it is Uncommon

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Blackboard article was read about 47,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 58 and blocks with 54: each hit it takes is cut by 22 %.

How to get Blackboard

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.

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Cards close in power

The cards just above and just below Blackboard in the power ranking, all domains together.

Card lists

Credits

Text : Wikipedia, Blackboard (revision), CC BY-SA 4.0. Photo : Unknown author Unknown author, Public domain, Wikimedia Commons.