What is this thing?

[Eidolon]

She was content to leave them to it, but she could hear the conversation still. She was also aware that Zephyr knew. Eido had seen the strange trinkets in question of course, and understood that they were tangled up in Zephyr’s insular mood. As the world changed, all sorts of old things returned to the world, and for now she accepted what Zephyr would or wouldn’t choose to tell her. Even so, it pressed a quiet frown to her brow – that idea of control. And yet it was no more than Eidolon had already pledged willingly.