Could you please add the following mod?
Name: Custom mob spawner 3.11.4
Description: This mod is a utility for Mo' Creatures. It allows you to set where the creatures spawn. Without it Mo' Creatures mobs will not spawn. (This is updated verion of custom mob spawner )
This is the official fashion page: https://www.mocreatures.org/downloads
in this mods there is Custom Mob Spawner (official from the DrZhark's)