Best way to spawn Mobs (Revelation)

[Nashannata]

Hey everyone.

I Play FTB Revelation.

I Like this Pack rly much.
Atm i'm looking for a way to Spawn mobs.
There are some ways in this pack to Spawn something.
So i Take a look on "Soulshards the Old Way".
I Wan't to Build a wither Skelleton Farm in Nether but
I'm not sure if that's the way to go.
There some other ways f.e. with a Spawner and a syringe.
But it's like wtf in my Head.

Any ideas for a good way to build a wither Farm?

And how can i Kill the Wither without dmg the World.
I'm not sure which Blocks are wither resistend.

Thx for your help.

 

[Xenulus]

There are a couple ways to do this. Three methods I know of in Revelation is to use cursed earth, a mob duplicator, and a resturbed spawner. Cursed earth is the easier, faster spawns method. Right click dirt or grass blocks with a drop of evil, which you can get as a rare drop from wither skeletons, so finding a nether fortress is required first. Make sure you make the spawning area first before you use the drop of evil, otherwise you might turn a huge area into cursed earth, which spawns very fast, strong mobs.
With a mob duplicator and the resturbed spawners you can choose which mobs will spawn, so either of those two would be ideal for wither farms. RFTools has an energy field of sorts which can be configured to contain hostile mobs, perfect for containing a wither.