Quote Originally Posted by Depression Moon
as Beatrix or Brahne actually knew the capabilities of said Eidolons, or really much about them apart from what they might have read in ancient books.

But they both knew exactly how powerful and dangerous they were as soon as they saw Odin waste Cleyra. They saw how Eidolons work with their own eyes.

They couldn't touch Odin physically. Gem versus the incorporeal being
The Cleyrans and their city sure was touched by him. Odin isn't the same as other intangible things such as sadness, because the emotion of sadness can't destroy a city in front of one's own eyes.