Your mass shifts, shaping into a specific form from an undefined blob. You feel bones, muscles, nerves, and veins all form within you, as your extremities shift into small claws, senses converging mostly in a concentrated spot, a head. You gain eyes, ears, a sharp nose, and a mouth filled with a few long teeth. You find that you now have movable limbs, two in the front, and two in the back. There is also a tail on your posterior end, acting as a counterweight of sorts for you, an extension of your spine.
You can now see the world around you. You know from memory that this place is naturally hot, and that a good way to get out of the heat is to tunnel undeground...but you're standing on ground that's too hard to do that. Large, loud things normally travel on this ground, and the unfortunate creature that you have become was in the way when one of these things crushed it. You look over to a twisted, flaming mass. You, not the thing you have become, instinctually feel that the flames are very bad. You dislike extreme temperatures. This warmth is enough to make you feel slightly uncomfortable, but not nearly as much as being bathed in one of those flames would be.