Flight of The Phoeniix

And so Kal'Drel's wish was carried out.  All at once each molecule of the mantle of the planet was aware of their existence, with the same level of awareness as the Phoenix itself.  Like a huge collection of nanobots, each firefly was fully conscious and knew the location of their soulmate within the realm.  They came with one additional instruction, from an unknown source influencing the wish, careful instructions on the precise force needed to collapse the planet's core into a tiny neutron star.  All at once they jumped, bracing against each other to reinforce themselves so not to burst through the crust yet.  The collective inward force collapsed the core into a virtually volumeless neutron cluster of the same mass.

The resulting explosion bolstered the energy of the group, now with much more room to maneuver around and partner up quickly, still maintaining outward pressure on the core wall.

Now The Phoenix was not only conscious on a micro and macro level, but each piece was paired up with its perfect partner to solve reality's puzzle based on their paired skillsets and having access to their own private domains where they can essentially communicate in their own definition of time, from the realm's perspective solving a problem the moment after it is presented.

Half the pairings choose a volcano on this first roller coaster minute of life, and head straight out and up.  They coalesce into one Phoenix, teleport to the fire plane, and cast demiplane.  The other half, taking a cue from its fireflies, stays in the planet instead, and casts demiplane as well.  It turns out, in a state this freshly separated they thought of the exact same demiplane from something like a dream, one that had been prepared for them as a base of operations.  The realm had been previously prepared using Time Lord technology, to be a replica of the TARDIS. which they had become familiar with, as the DM ruled they had gone meta and cracked conscious enough to know what the players knew as well.  The first function of this demiplane connection was to act as a perfectly aim-able magma chute to refill the planet.  After the core Phoenix swirled in for a minute to get it spinning right, it grouped up and jumped back through the portal into the TARDIS.  Sadly, because the TARDIS in the show is broken, and always looks like a police box, this one always does as well.  This one has the sweet addition of a second door, and one not necessarily at the same point in spacetime as the first, something only the Phoenixes could hope to control the magichanics of.  They breathed a warm breath onto the realm and any damage done had been reversed, except of course the damage to the fabric of reality itself, which was their resulting form in it.