Angor already learned something about a Soft Larva egg from Sunders.
A "Soft Larva" was a particular monster worm natural to Abyss Plane. These worms obeyed a strict social class system. They weren't very powerful in terms of strength, so they were mostly used as alchemy material and test subjects by wizards.
A Soft Larva was potentially valuable because of the presence of Mutation Larva among them, which facilitated a certain cantrip called Transform.
The time and effort required to study a real spell and a "cantrip" were vastly different. To master a spell, a wizard might need many centuries, while a cantrip only asked for several months, as long as someone's talent didn't go against it.
However, there was one exception among cantrips—Transform. It was commonly believed that Transform was as complicated to study as real spells.