Crown group, an Uncommon card

The card carries these facts from its Wikipedia article.

• It is thus a way of defining a clade, a group consisting of a species and all its extant or extinct descendants.
• For example, Aves can be defined as a crown group, which includes the most recent common ancestor of all modern birds, and all of its extant or extinct descendants.
• The concept was developed by Willi Hennig, the formulator of phylogenetic systematics, as a way of classifying living organisms relative to their extinct relatives in his "Die Stammesgeschichte der Insekten", and the "crown" and "stem" group terminology was coined by R. P. S. Jefferies in 1979.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Crown group article was read about 46,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 67 and blocks with 46: each hit it takes is cut by 18 %.

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 Crown group in the power ranking, all domains together.