I made this plugin to nerf the efficiency of nether xp farms on my server.
All you do is set the mobs, the spawn chance and the height it takes effect.
spawnChance of '1' would be vanilla(spigot/paper) spawning
Config
Code (Text):
Height: 120
spawnChance: .25
Mobs: [ZOGLIN, ZOMBIFIED_PIGLIN]