Emerald Pool, a Common card

The card carries these facts from its Wikipedia article.

• It is named for its deep green color, which is caused by algae living on the rocks at the bottom of the pool.
• In the summertime during diminished water flow, the Silver Apron is frequently used by hikers as a water slide.
• Swimming or wading in the Emerald Pool or entering the Silver Apron is prohibited by the National Park Service since waders or swimmers have been swept over Vernal Fall and killed, and people sliding down Silver Apron risk collision with hidden rocks at its lower end.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Emerald Pool article was read about 2,500 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 34 and blocks with 25: each hit it takes is cut by 10 %.

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 Emerald Pool in the power ranking, all domains together.