UPM J1040−3551, a Common card

The card carries these facts from its Wikipedia article.

• It consists of a brighter pair of young red dwarf stars and a fainter pair of cold T-Type brown dwarfs.
• This configuration, a pair of brown dwarfs orbiting a pair of red dwarfs has never been observed before and serves as a benchmark for studying brown dwarfs, which are "failed stars" too massive to be planets but too small to sustain hydrogen fusion like normal stars.
• The system provides crucial insights into the formation and evolution of low-mass stellar and sub-stellar objects, as well as the mass distribution in the universe.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The UPM J1040−3551 article was read about 650 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 52 and blocks with 32: each hit it takes is cut by 13 %.

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 UPM J1040−3551 in the power ranking, all domains together.