Credit:

AtomicStryker's Battle Towers
https://www.curseforge.com/minecraft/mc-mods/atomicstrykers-battle-towers

KODAICHI Classics
https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/1272384-1-7-3-battle-towers-chicken-gliding-kodaichi

Command Tool:
https://www.gamergeeks.net/apps/minecraft/mob-generator

Advancements:
https://advancements.thedestruc7i0n.ca

Misode:
https://misode.github.io/


License: MIT

The MIT License Copyright (c) <year> <copyright holders> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files
 (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 

Clarification
You are allowed to use this in...
 any modpack,
 on servers
 videos
 You don't have to give credit but it would be nice if you did.