An urgent question that need more urgent answer !!

[JaymeMine]

Hello ;-)

I have a little question about what this beautiful map Herobrine's return:

How to NPCs with a nickname? And how to change the loot monsters? (No mod and more!)

Thank you in advance

[Greevir]

Hello ;-)

I have a little question about what this beautiful map Herobrine's return:

How to NPCs with a nickname? And how to change the loot monsters? (No mod and more!)

Thank you in advance

It's done with a number of tools not limited to, command blocks and MCEdit. HERE is a thread detailing how many of the things are edited.