Getting started:

• The first thing you need to do is acquire a nether star and craft it with 2 blaze rods to get the Nether Wand.
• Right click a mob with below half health to get an Enhanced Spawner that will spawn that mob.
• The Nether wand has one use so decide which mob you wish to spawn wisely.
• You may break and place the spawner as you wish without losing it.
• To upgrade the spawner, simply right click with redstone, lapis, or emerald blocks.
• To get maximum efficiency, use 20 redstone blocks
• To make the spawner spawn more than one mob at a time (up to 5) use 4 lapis blocks
• To make the spawner spawn whether a player is near or not, use one emerald block
• Finally, to activate the spawner, apply redstone signal!
• This spawner can spawn any mob from any mod thus tested!