"But you summoned many, many more than you intended. Roxas would not have put anypony else in danger like this, even if he had overestimated his ability to defeat a group of Nightmares." Celestia frowned thoughtfully as she considered what he'd said earlier.

"Master Eraqus, I think we ought to investigate this further. Either more Nightmares are attracted to the bait they used to lure them in general, or adding additional bait had a multiplicative effect rather than an additive one. If it's the former, that might mean something greater is at work, and either way we ought to know so we can warn others."