WikiCards · Card list · History cards · Hadean
Rare card · History
Hadean, a Rare card
The Hadean is the first and oldest of the four geologic eons of Earth's history, starting with the planet's formation about 4.6 Ga, and ending 4.031 Ga, the age of the oldest known intact rock formations on Earth as recognized by the International Commission on Stratigraphy.
- Rarity
- Rare
- Domain
- History
- ATK
- 70
- DEF
- 76
- Power
- 146
- Wikipedia reads a year
- 350,000
Power 146 (ATK + DEF): stronger than 75 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- The interplanetary collision that created the Moon occurred early in this eon.
- The Hadean eon was succeeded by the Archean eon, with the Late Heavy Bombardment hypothesized to have occurred at the Hadean-Archean boundary.
- Hadean rocks are very rare, largely consisting of granular zircons from one locality in Western Australia.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Hadean article was read about 350,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 70 and blocks with 76: each hit it takes is cut by 30 %.
How to get Hadean
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 History cards
Cards close in power
The cards just above and just below Hadean in the power ranking, all domains together.
- ThundercatRare · Arts · ATK 73 DEF 73
- Brandenburg GateRare · Arts · ATK 74 DEF 72
- EstherRare · Arts · ATK 73 DEF 73
- Legion of HonourRare · History · ATK 80 DEF 66
- Bud SpencerRare · Arts · ATK 72 DEF 74
- Standard ModelRare · Science · ATK 80 DEF 66
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- History cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Hadean (revision), CC BY-SA 4.0. Photo : NASA/JPL-Caltech, Public domain, Wikimedia Commons.

