Defensive wall, an Uncommon card

The card carries these facts from its Wikipedia article.

• The walls can range from simple palisades or earthworks to extensive military fortifications such as curtain walls with towers, bastions and gates for access to the city.
• From ancient to modern times, they were used to enclose settlements.
• Generally, these are referred to as city walls or town walls, although there were also walls, such as the Great Wall of China, Walls of Benin, Hadrian's Wall, Anastasian Wall, and the Atlantic Wall, which extended far beyond the borders of a city and were used to enclose regions or mark territorial boundaries.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Defensive wall article was read about 59,000 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 66: each hit it takes is cut by 26 %.

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 Defensive wall in the power ranking, all domains together.