Mephistopheles watched as the first part of his plan came to fruition. The planet had successfully been remade in the main universe, after so much time spent building up and conserving energy. Finally, it all paid off.
As he channeled more energy into the planet through a portal in his dimension, he wondered what he would have to do to actually attract his prey. The humans were a young, curious species still on the paths of discovery and expansion. Perhaps something to entice them...
Once the planet was fully cooled, Mephistopheles conjured a ball of argent energy in his hand, allowing it to build up to the point of it exploding from the sheer amount of heat and energy building up in his hand. He then sent the ball darting through the portal where it exited in the space above the planet. The asteroid-sized ball hurtled into the planet's atmosphere, trailing a thick line of red energy as it cut its way across the planet's orange sky and finally made contact with the surface.. upon which a massive explosion was generated that could be seen from space.
The sheer amount of energy released from this explosion kicked dust and sand into the atmosphere and sent winds that shook the entire planet momentarily. The center of the explosion also caused a massive spike in radiation that could also be detected by any space-faring species. What was now left behind was a massive crater, hundreds of miles wide. Within the crater, sparks of red electricity sizzled and danced around it, with small orbs of glowing red energy rolling and bouncing around with each small explosion of red electricity.