Hello again! It's been a long time since I've uploaded anything at all, so I felt the need to make a new post. Today, I've got something map makers as well as survival players might seriously like. Let's get straight into it!

What is this new command creation?
This time, the user has the ability to toggle which entities can spawn naturally and which ones cannot. Please note, this does not include bosses and other entities that are neither a monster nor an animal. Also, any entities that don't spawn naturally in the first place are excluded from the list.

How do I toggle entity spawning?
In order to do this, you must first make sure to install the first and then the second part of this command creation. You'll know if you've done that correctly if you receive a "Critter Control Manual". Once you have gotten this book, open it up and look through it. The book is laid out in such a way as to make it easy for the reader. There are two categories: Peaceful mobs (entities that spawn in peaceful mode) and hostile mobs (every other entity that is included in the command creation that is aggressive).

Any extra information to know?
This command creation works by teleporting any disabled entity into the void. While this technique is effective, it also causes lag. As a result, it will only teleport entities that are within 100 blocks of each person who has that entity disabled. Also, each individual player has their own settings for which entities are disabled and enabled. This can be a good thing, but also a bad thing too. Be very careful how you use this command creation because if a player with pigs disabled were to come to your pig farm, all the pigs would be removed. This command creation was initially targeted at disabling hostile mobs from spawning (such as the creeper), so it might be most effective when it comes to hostile mobs.

Installing the command creation:
First, copy the command from the first pastebin link respective to which Minecraft version you're using. Then, paste that into a command block and activate it. Then copy the second command from the next link and paste it in the command block that is spawned after running the first command. If this is done correctly, you will get a manual.

Commands:
1.12:
https://pastebin.com/s4i7ataP
https://pastebin.com/Jx2mkmZb