Mobs Devolve

This is a challenge datapack to spawn an amount of mobs when another mob is killed. Currently it supports:

Ender Dragon Wither Enderman Witch Creeper Skeleton Zombie Spider Silverfish

When a mob on this list is killed it will spawn a number of the mob below it on the list, set by the [/trigger setmult set <amount>] command. Default is 1.

Here is a video of it in action.