diff --git a/src/main/java/ru/bclib/world/biomes/BCLBiomeDef.java b/src/main/java/ru/bclib/world/biomes/BCLBiomeDef.java
index cc405214..bd661334 100644
--- a/src/main/java/ru/bclib/world/biomes/BCLBiomeDef.java
+++ b/src/main/java/ru/bclib/world/biomes/BCLBiomeDef.java
@@ -300,6 +300,10 @@ public class BCLBiomeDef {
 		return this;
 	}
 	
+	protected void addCustomToBuild(BiomeGenerationSettings.Builder generationSettings){
+	
+	}
+	
 	public Biome build() {
 		MobSpawnSettings.Builder spawnSettings = new MobSpawnSettings.Builder();
 		BiomeGenerationSettings.Builder generationSettings = new BiomeGenerationSettings.Builder();
@@ -321,6 +325,8 @@ public class BCLBiomeDef {
 		features.forEach((info) -> generationSettings.addFeature(info.featureStep, info.feature));
 		carvers.forEach((info) -> generationSettings.addCarver(info.carverStep, info.carver));
 		
+		addCustomToBuild(generationSettings);
+		
 		effects.skyColor(0)
 			   .waterColor(waterColor)
 			   .waterFogColor(waterFogColor)
diff --git a/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java b/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java
index 62ced1da..9fdbfbe5 100644
--- a/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java
+++ b/src/main/java/ru/bclib/world/generator/BCLibNetherBiomeSource.java
@@ -12,7 +12,9 @@ import ru.bclib.BCLib;
 import ru.bclib.api.BiomeAPI;
 import ru.bclib.world.biomes.BCLBiome;
 
+import java.util.LinkedList;
 import java.util.List;
+import java.util.function.Consumer;
 
 public class BCLibNetherBiomeSource extends BiomeSource {
 	public static final Codec<BCLibNetherBiomeSource> CODEC = RecordCodecBuilder.create((instance) -> {
@@ -26,6 +28,8 @@ public class BCLibNetherBiomeSource extends BiomeSource {
 	private BiomeMap biomeMap;
 	private final long seed;
 	
+	public static final List<Consumer<BCLibNetherBiomeSource>> onInit = new LinkedList<>();
+	
 	public BCLibNetherBiomeSource(Registry<Biome> biomeRegistry, long seed) {
 		super(getBiomes(biomeRegistry));
 		
@@ -53,6 +57,8 @@ public class BCLibNetherBiomeSource extends BiomeSource {
 		this.biomeMap = new BiomeMap(seed, GeneratorOptions.getBiomeSizeNether(), BiomeAPI.NETHER_BIOME_PICKER);
 		this.biomeRegistry = biomeRegistry;
 		this.seed = seed;
+
+		onInit.forEach(consumer->consumer.accept(this));
 	}
 	
 	private static List<Biome> getBiomes(Registry<Biome> biomeRegistry) {