Thanks for the props, folks! It started because we had a table near the door and every time someone came in Kate complained that she was cold (it’s snowing here). So we told her the only way it WOULDN’T happen was if people phased through the door. And that led us, inexorably, to Kitty Pryde.
Wouldn’t it also imply that she can’t process oxygen while in phase? So no breathing! That should effectively limit the time she can spend in phase.
Fantastic Four vs. X-Men #1-4. Somehow Kitty got trapped in her phased state (something to do with an attack during the Mutant Massacre?), and the X-Men had to form an uneasy alliance with Dr. Doom, who claimed to be able to save her.
As far as I know, heat and cold aren’t a problem. I’m pretty sure she’s phased through flames. Breathing is only a problem when she is phasing through something solid. Phasing through a wall wouldn’t be a problem but phasing through the planet would be impossible.
She was hit by an energy blast from the Marauder Harpoon while trying to save Rogue in UXM #211. She was gradually fading away. Dr. Doom was able to stop the process, but Kitty was left permanently phased. I had read the most recent issues, but I believe that’s still the way it is.
As for the OP, I’m 99% sure she’s been shown phasing through fire but can’t quote an issue. I’m actually in the middle of re-reading UXM now, but I doubt I’ll get to the issues involving her for a while
Put phased Kitty in a box with a tank of oxygen.
Put phased Kitty in a box with a wall of flame
Put phased Kitty in a box with 1920s Style Death Ray
Put phased Kitty in a box with a wall of flame, a 1920s Style Death Ray, and a tank of oxygen.
In the “God Loves Man Kills” graphic novel, Kitty phased just in time to avoid being killed when a store exploded. She was clearly in the explosion and fireball, so my guess would be that (at least as of the late 1980s) she was able to phase through fire.
Note this only applies while she’s inside another solid object. Presumably, since she can phase matter other than her own body (i.e. her costume, other people), when she breathes while phased and outside another solid object she phases the incoming air so that it’s in the same state she is, thus allowing her to metabolize oxygen.
Back in my geekier days I wrote a letter to the editor positing various extensions of Kitty’s powers, one of which was phasing a volume of air molecules adjacent to her body to allow her to breathe while inside a solid object. Never got any response though, not even a No-Prize.
Powers: Generate magnetic repulsion within her body to become ephemeral, allowing her to pass through solid objects, walk on thin air, utilize her magnetic distortion to scramble electronic systems, and extend her intangibility to anything she touches