Controlling spawns (removing one mob)

[keybounce]

What's the simplest mob spawner to setup to remove one mob?

The mod pack will have twilight forest as the only non-vanilla biomes.
There is one vanilla mob that I do not want to see (except, perhaps, from dungeon spawners).

Twilight forest mobs in the forest, as normal.

What's the easiest way to handle this? (There's something like three different spawn modification mods).

1.6.4.

 

[eliandarkbrood]

Um... what mob?

Sent from my LG-L38C using Tapatalk 2

 

[Watchful11]

Looks like it would be pretty easy with this one.

 

[keybounce]

Creepers.

I saw that one, last night. Nothing stated about modpack permissions.

Part of my concern is structure spawning -- I also saw JAS, but it looks like it completely replaces the structure spawn system, and I want that unchanged (both for twilight forest, and things like nether fortresses in mystcraft ages.)

 

[Watchful11]

The license is on the github page.

 

[keybounce]

Ahh; good. GPL is always good .

I'm having issues with JAS; I'll give this a try instead.