Ban placed the Unknown Egg above the fourth F-Apprentice Rank Mild Tempered Crocodile. However, he almost had a heart attack as he realized that the Unknown Egg actually did not absorb it, and it seems to be rejecting it a bit.
He just thought about the Unknown Egg being not picky earlier and now it no longer wanted to consume this fourth crocodile already?
However, he heaves a sigh a while later. He recalled that the Unknown Egg has a limit of the number of Beasts it could absorb in a set period of time. In other words, it still needs to digest the Beasts it consumed before it can proceed to consume another.