Pluto
Based on how you felt about Pluto, one could guess the era you were from.
The ancient humans before Blink only viewed Pluto with light curiosity.
The humans during 0-300 YAB, humans were confined to Earth and went through nuclear wars, Murloc crisis, fatal pandemic, and asteroid crisis. They had no time or resources to care about Pluto.
Then came the golden age of the 300s. Dungeons appeared in 300 YAB, not just on earth, but on every planet, including Pluto.
For a few years, humans were threatened by the magic beasts that broke out from dungeons and slaughtered the masses.
But soon, humans turned the situation around.
They started using beast cores to manufacture powerful star treasures—a new generation of weapons that vastly outmatched everything else.
They discovered the treasures dungeons had to offer—special aura-rich fruits, herbs, liquids, and many more natural.