They're rather astonishingly flammable.

If the ice slimes knew what fun he was having, surely they would leave him alone! But alas, they are mere brainless slimes. Literally brainless. Their transparent bodies contain no organs or nerves.

A penguin waddles past. It neglects to applaud. How rude.

He is not sure if penguins are enemies. He declines to explode the penguin preemptively. He will forgive it being a bad audience.

An ice slime hops onto the penguin. The penguin explodes. This is probably evidence of penguin benignness.

"Good!"

"Doesn't match though. How hard would it be to turn it into a fire tail?"

"I could probably craft a separate fire tail, subsituting a fire feather for your tail in the tail recipe. Just need a fire feather."

Cam attempts to make a fire feather.

"Where do you get 'em and from what?"

"In the Underworld, from Red Devils. They only show up in islands that have seen the Wall of Flesh."

"Do you want me to go get one for you?"

"I'm not sure. I'm worried that if I try to tell you how to safely navigate my island, I'll forget something and you'll be attacked by something weird you don't know how to deal with."

"Yes. Wyverns in the air, and giant worms underground."

"If those are the only two, you can tell me how to deal with them, and I can just travel around in a tediously relocated enclosure of blocks to hedge out everything else."

"There's more than those, but they're all sort of generally wormlike. Setting them on fire is usually a good choice, except for the kinds that are immune to fire; I use magic weapons on those. Oh, and there are some other monsters that can teleport... see what I mean?"

"I do. Maybe we should make it a joint trip. No hurry, this tail certainly works, and I might be able to just bleach and dye it for color even if it doesn't have proper flames."

"Oh, I can dye it any colour you like. Terraria has very convenient magic dyes. I wonder if you can make them?"

He gets a small bottle of something which calls itself Pale Orange Dye. Its subtle Terrarian UI indicates that he may dye his wings or tail with it, and offers previews. The wings would look slightly muted, with no colour variation in their flamelets; the tail would look just about the same colour as the wings currently are, although the dye would not make it translucent or glowy.