Tax them

Pardon, but what would you consider slush? Thank you kindly.

A rouge elf brought natural magic to a rising civilization. He did it without asking. That civ combined it with technology and over time became violent, chaotic, authoritarian, colonialist. So the rogue elf made a magic machine to destroy them by folding the planet into itself.

Always remember that it was Satan that gave humanity knowledge. We wouldn’t have anything if not for them. No phone, no lights, no motorcars. Not a single luxury. Not paper, not ink, nor books, or computers. No houses. No television. No clothing. No art. No music, no culture. No education. Nothing.

Idle Planet Miner or The Tower