Configurable Mob Potion Effects - Complete Guide
This mod opens up endless possibilities for customizing mob behavior in Minecraft. You can assign potion effects that will permanently affect any creatures, as well as effects that mobs will apply when attacking.
Configuring Configuration Files
After the first launch of the game with the mod installed, two main configuration files are created. They contain all possible creature types and available potion effects. By default, all effects are disabled (level set to 0). You just need to find the appropriate line and change the values.
File 'permanenteffects.txt':

File 'ondamageeffects.txt':

Practical Examples
Example 1: Super Fast Slimes
Let's make all slimes incredibly fast by setting a permanent speed effect of level 50.
Find the slimes section in './config/configurablemobpotioneffects/permanenteffects.txt':

Find the speed effect section:

Set the level to 50:

Restart the game or use the /cmpe reload command and watch the magic:
Show Result
Example 2: Endermites with Levitation
Let's make endermite attacks apply levitation level 10 for 1 second.
Find endermites in './config/configurablemobpotioneffects/ondamageeffects.txt':

Find the levitation section:

Set levitation level to 10:

Set duration to 1 second:

Restart the game or use /cmpe reload and fight that endermite!
Show Result
Example 3: Poisonous Zombie
Create a fast zombie that poisons its target when attacking.
Find zombies in 'permanenteffects.txt' and set speed to level 5:

Find the zombie section in 'ondamageeffects.txt' and set poison to level 2 with 5-second duration:

Restart the game or use /cmpe reload - done! Here's the resulting zombie:
Show Result