1): hover approximately 40080 miles over the surface of the earth(distance based on KellKheraptis' CL trickery). That is 64502507,52 meters
2): Directly below you, have as dense and as huge an object as you can get your hands on. For now, let's just assume you can probably get your hands on, through spells and other fun shenanigans, an object weighing 2444880 kilograms, or 2444.88 metric tons(the approximate product of Major Creation making osmium at CL 4008).
3):Adjust your height so that the bottom edge of this object is exactly 40080 miles.
4):Fire off a locate city bomb, launching the object all those 64502507,52 meters to the surface of the earth in six second, getting it a speed of 10750417,92 meters/second(approximately 3-4% of the speed of light). Given a weight of 2444880 kilograms, that gives it a kinetic energy of, hold on, 141279206679191057596,416 joules, or 33766540,7933 megatons of TNT. That equals approximately 74442479694499710 pounds. Given those 3d6 damage that one pound of TNT does, that means we do 223.327.439.083.499.130d6 damage.
As it turns out, just summoning a fuckton of Anti-Osmium is waaaaay more efficient. But not as awesome as launching a super-missile from outer space, i would argue.
