"I didn't hear about that."

"It was a long time ago! They got better."

"Is there some kind of minor reversible magic harm someone could attempt to do me as a controlled test of whether my indestructibility holds up?"

"What exactly do you mean by indestructibility?"

"Hmmm... if we're thinking about mind-affecting spells, the closest you might find would be Kakariko Village."

"I can hit you with a Frostblade."

"I have no reason to believe I'm immune to mind affecting spells, but I am immune to mind affecting drugs unless I choose otherwise and the blight might be more like that. I'm indestructible in the sense that I can be harmed a little bit, more if I allow it, but categorically can't die and heal from everything that happens to me very fast. Go for the wing, will you, it's easy to replace." He holds out a wing.

He draws a long blade from his back that flashes icy blue as he takes ahold of it. Its edge starts to glaze with rime even as Link gives it a few practice swings.

Then he slows down, steps close, and give the outermost joint of the wing a grazing skim.

It feels very cold, but that's it.

"You can hit the wing harder than that, if you chop it off entirely it'll just heal back or I'll make a new one if it somehow doesn't."

Link whacks it hard enough to cut it clean off if it were a normal wing.

If it were a normal wing, it'd also freeze the entire wing solid, inside out, in a penetrating shock.

A bit of frost forms on the edges of the wing but it doesn't get very deep. He shakes off the little scratch the sword makes in a second and flaps off the ice crystals. "Okay, tentatively looks like I remain indestructible against magic."

"Check an ancient arrow too."

"Excellent point!" Robbie rifles in his pockets and comes up with a pointed widget. "I have a spare charge right here, doesn't fit right on an arrowhead, perfect for a test!"

"Why do you even carry that on you?!"

Cam holds out his wing steady.

Robbie scampers forward with measuring tape procured from somewhere, but Purah waves her hands. "Wait, wait wait! If your invulnerability prevents it from warping away only part of your wing, it might drag your entire body into the interplanar void!"

"Oh. That does sound bad. These things drag targets into the interplanar void???"

"YES!" Robbie sounds very proud. "I invented them by inverting the mass-phase mechanism of an ancient forge!"

"...You invented them?"

Cam folds his wing. "I do not want to be in the interplanar void."

Purah claps her hand. "Experimentation over!"

"We'll stop by Zora's Domain to ask for a sundelion, just in case."

"That might work." To Cam, "Sundelions treat common Malice poisoning. Extremely, rare, though. The Gorons didn't try that, obviously. The Zora might have useful advice anyhow; the healer who fixed the Malefacted Gorons last time should still be alive. It would make me feel safer about letting you near that nasty stuff."

"The Zora fixed them? Mipha gave me her healing powers."

"MIPHA WHAT?"