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WikiCards · Card list · Nature cards · Coumarin
Uncommon card · Nature
Coumarin, an Uncommon card
Coumarin or 2H-chromen-2-one is an aromatic organic chemical compound with formula C9H6O2.
- Rarity
- Uncommon
- Domain
- Nature
- ATK
- 73
- DEF
- 68
- Power
- 141
- Wikipedia reads a year
- 120,000
Power 141 (ATK + DEF): stronger than 70 % of WikiCards cards.
Coumarin quiz: 3 questions
Three questions on the Coumarin card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It belongs to the ______ chemical class and is considered a lactone.
Answer
benzopyrone. It belongs to the benzopyrone chemical class and is considered a lactone. From the Coumarin article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
David Sanborn. David Sanborn 76 · Coumarin 73 · Clay 70 · Rhea 67 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Its molecule can be described as a benzene molecule with two adjacent hydrogen atoms replaced by an unsaturated lactone ring −=−−O−, forming a second six-membered heterocycle that shares two carbons with the benzene ring.
- It belongs to the benzopyrone chemical class and is considered a lactone.
- Coumarin is a colorless crystalline solid with a sweet odor resembling the scent of vanilla and a bitter taste.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Coumarin article was read about 120,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 73 and blocks with 68: each hit it takes is cut by 27 %.
How to get Coumarin
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.
More Nature cards
Cards close in power
The cards just above and just below Coumarin in the power ranking, all domains together.
- ArgentavisUncommon · Nature · ATK 71 DEF 70
- Attu IslandUncommon · Nature · ATK 74 DEF 67
- CollageUncommon · Arts · ATK 74 DEF 67
- David SanbornUncommon · Arts · ATK 76 DEF 65
- DefibrillationUncommon · Science · ATK 77 DEF 64
- Francis de SalesUncommon · Society · ATK 73 DEF 68
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Nature cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Coumarin (revision), CC BY-SA 4.0. Photo : Calvero., Public domain, Wikimedia Commons.
