[Lawtan]

*A massive Laser tentacle from the GIF-dimension appears, then fades away*

Not quite. See, you need to melt glass and metals (tin, silicon, and mercury), then accelerate the resulting alloy/composite material until the atoms become unstable. Then, you take these lovely microscopic extremophiles that have been nurtured in the bottom of a cauldron and feed the unstable reflective matter to these creatures, their offspring will be colonial and like a radioactive mirror in ability. Indirectly, it produces glitter waste. Direct touch is deadly.