Remember the spawn eggs you got using the Sceptre of Concealment? What if you could multiply them without having to kill more mobs?! That's possible :D
Using the reproducer, you can duplicate your eggs using mob drops :D
Let's say we need more creepers, and we have plenty of skeletons. Put the creeper egg on the left with the respective drop on the top (gunpowder) And the egg you don't mind losing on the right with it's drop on the bottom.
Like this:
Wait for it to cook and you'll end up with this:
It's a nice way to get wither skeletons! Get one and then just multiply it :D
Here's the list of the mob drops you must use: TO SEE THIS LIST IN GAME USE THE MOD NEI AND PRESS "U" OVER A SPAWN EGG
Skeleton = Bone
Wither Skeleton = Coal
Creeper = Gunpowder
Spider = Spider Eye
Zombie = Rotten Flesh
Slime = Slime Ball
Ghast = Ghast Tear
Zombie Pigman = Gold Nugget
Enderman = Ender Pearl
Silverfish = Silverfish Scale
Blaze = Blaze Rod
Magma Cube = Magma Cream
Bat = Bat Wing
Witch = Glow Stone
Pig = Raw Pork Chops
Sheep =White Wool
Cow = Beef
Chicken = Raw Chicken
Squid = Ink Sack
Wolf = Wolf Teeth
Mooshroom = Red Mushroom
Snow Golem = Snow Ball
Ocelot = Raw Fish
Iron Golem = Iron Ingot
Horse = Leather
Villager = Emerald
Recipe:[]
You can use any vanilla spawn egg:3