Ultra rare

Black hole

Compact astronomical body

A black hole is an astronomical body so compact that its gravity prevents anything, including light, from escaping. Albert Einstein's theory of general relativity, which describes gravitation as the curvature of spacetime, predicts that any sufficiently compact mass will form a black hole.

Attack
9,000
Defense
9,360
readers / month
220,198
Article length
207 kB · 188 languages

Text from Wikipedia, CC BY-SA 4.0 · Authors

Black hole is a Ultra rare card because its Wikipedia article was read 220,198 times in the last 30 days. Its 207 KB of text give it 9,000 attack, and coverage in 188 Wikipedia language editions gives it 9,360 defense.