Skills/conditions/biome.md

@@ -17,6 +17,13 @@ Conditions:
 - biome DESERT,DESERT_HILLS
 ```
 
+If using a custom biome (like from a datapack), you can define it with the namespaced key like this:
+
+```
+Conditions:
+- biome far_end:void,far_end:warped_marsh
+```
+
 ---
 
 **Extra Information:**