Actin, an Uncommon card

The card carries these facts from its Wikipedia article.

• It is found in essentially all eukaryotic cells, where it may be present at a concentration of over 100 μM, its mass is roughly 42 kDa, with a diameter of 4 to 7 nm.
• An actin protein is the monomeric subunit of two types of filaments in cells: microfilaments, one of the three major components of the cytoskeleton, and thin filaments, part of the contractile apparatus in muscle cells.
• It can be present as either a free monomer called G-actin or as part of a linear polymer microfilament called F-actin, both of which are essential for the cellular functions of mobility and the contraction of cells during cell division.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Actin article was read about 38,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 91 and blocks with 96: each hit it takes is cut by 38 %.

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 Actin in the power ranking, all domains together.