system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel, X-Men] Does having an active x-gene always mean you can access extra-dimensional energy?

What I mean, is that even the mutants without an obvious extra-dimensional connection (Cyclops' "punch" beams, Nightcrawler's teleportation, Magik's Limbo connection) still manage to break conservation of energy on a regular basis.  

Wolverine heals wounds that require a significant amount of tissue to regrow, without his needing to constantly eat/drink.  I seem to recall Deadpool having cut off parts of himself to use as food...which means he's more than 100% efficient at getting sustenance from his own flesh.  Or that he's just avoiding the feeling of hunger by slicing himself up.

Everything from Jubilee's sparks and Gambit's energizing objects, to the Blob's gravity-altering abilities and Magneto's ability to create and modulate magnetic fields with pinpoint accuracy point towards some outside energy source.  Or are they all somehow solar powered?
gpt
I think it's pretty obvious at this point that the first law of thermodynamics that govern some universes simply doesn't have any issues being broken in the 616 and associated universes.

Also the barriers between dimensions of all sorts and sundry appear to be pretty malleable in the 616. Whether it's a Pym particle shunting mass back and forth, or a Banner reaction summoning thousands of tons of biomass to this realm in an instant or the ability to rip the walls between this dimension and the Negative Zone with no apparent heat effects on either side, energy is thrown to and fro at the whim of any number of entities without any care for balancing the mass/energy scales or caring if there's anything on the other side of all these portals to even be concerned with.

For all we know, every time Iron Man jets off with out enough reaction mass to thrust away to support himself in any way, shape or form, a massive amount of 'X'-dimensional kittens are obliterated somewhere to balance the thermodynamic scales, as it were. Nobody in the 616 seems to care, or notice.