Base Multiplier: Configure a global spawn rate that applies everywhere (default: 0.2x) Cave Spawning: Progressive scaling based on depth Shallow caves (Y=60): Minimum multiplier (default: 1.0x = 20% ...

For example all piglins might get replaced by llamas. Covers all types of mob spawns (natural, summoned, stuctures, ...). The randomized mappings are created when the world is loaded. They are based ...