Weaver wants to know if these are normal giant frogs or enchanted giant frogs, so she'll put her ribbitclicker down and cast Detect Magic on a frog, to see if there's a spell at work here. 

The frogs are enchanted. In their normal state, they were normal frogs, but as Weaver looks, she notices a shimmering magical gloop covering the frogs, which she can only see with detect magic. The gloop looks similar to what she gathered before from the mimic.

She relays this to the group, and suggests finding a way to clean the goop off of the frogs. "There's something strange going on here - we should ask the professors if they can help us identify this stuff!" 

"Oh certainly yes, but that fang tooth guy wasn't very helpful at all."

You look around, and there are two professors around: The "fang tooth guy"(as he shall now be referred to) and a wizened gnome in Witherbloom professor garb, digging for herbs in the grass.

Elsenia spots the Witherbloom gnome and heads in his direction. He looks much more friendly than the vampire professor. As she is a student of Witherbloom, she hopes the professor will take more kindly to her and help them with their predicament.

She clears her throat when she reaches the gnome. "Excuse me, Professor?" she begins. "Could you take a look at these frogs? They were normal frogs until just recently. We believe they have been enchanted. They're covered in a mysterious goo. We want to return the poor hoppers to their original state."

As Ooboron is properly scared of both professors and vampires — and fang tooth guy is both — the loxodon does not pause as Elsenia veers off to solicit the help of the Witherbloom professor. He continues on, playing pied piper to the oversized frogs.

Theodore also continues to usher the frogs away. The farther they are from the main building population the better.

Lacking any better options, Venrys casts Mage Hand and gives the hand a handkerchief to try and gently clean some of the goop from the frogs at a safe distance. "Weaver, I don't suppose you were able to analyze whatever that substance is?"

The Gnome Professor looks up, quite startled. "Oh, well, hello there, young pupil. I would be happy to examine your frogs! As I always say, Curiosity is the key to knowledge!" The professor stands, brushes himself off, and walks up to the frogs, which are being distracted by Theo and Ooboron, "A goop, you say? hmmm" The professor pulls a pair of bejeweled goggles onto his face, and stares at the beasts "Oh, that? That's just slime. The...uh...magical properties of the snarls cause amphibians to excrete a special slime, which we can harvest and use for food. I dare say Tulk, he's the main chef for the school, makes a wonderful souffle topped with the stuff. Well, I must be on my way! Crocodiles to milk and all that!" With that, the professor hurries off, muttering to himself.

 If you would like to insight him, make a DC 9 insight check.

And Ooboron, make one final DC 9 Performance check.

Let's re-roll those dice

The insight DC is: 14

The Performance DC is: 0

Performance: 26 with perfectly mimicked frog noises

Insight check 4

Theo notices nothing, in fact, he is distracted by one of the frogs, who appears to be putting on an opera show, croaking very loudly. Theo wishes he could sing that deep.

The Frogs follow Ooborons commands, and if you are done with them, hop off into the swamp.

Is everyone ready to move on?

Elsenia frowns after the gnome professor. He had barely even glanced at the frogs, and she was sure this was no ordinary frog slime. It was the same goo that had been on the mimic chest. What was going on? Why were the professors behaving this way?

Insight - 9

Weaver shakes her head at Venrys.  "No, I was hoping to do it tonight, but the frog race just sounded like so much fun until it wasn't.  Still, the fact that there were two different things coated in the same goop is exciting, yes?  I can probably Identify it, but that would mean touching it, and while I'd like to be bigger, I don't want to go all bitey."

Ooboron watches the real frogs hop away and moves to join the others to watch them disappear into the swamp — still disguised as a giant frog wearing a sparkly cummerbund and bowtie. "I guess I did the right thing," he says timidly.

"Yeah Ooby, you were great!! Theo pats his friend on the knee because he can't reach his back. "We're so proud of you!"

"Indeed," Venrys says to Ooboron with a smile. "That was quick thinking. Well done."

Weaver gives Ooby a giant hug, squeezing her ribbetclicker as she does, and giggling.