Name of the plugin you want: AdvancedSpawners
Spigot Link: https://www.spigotmc.org/resources/1-8-1-16-5-%E2%9C%85-advancedspawners-%E2%9C%85-11x-custom-mobs-%E2%AD%95-create-custom-mobs-in-game-%E2%9A%A1-25-sale-%E2%9A%A1.75458/
Price: 8.99 EUR
How it would contribute towards the betterment of...