Simply, when you die, you respawn as a ghost, and your only purpose is to find your body so you can resurrect.
A grave spawns at the location of your death. A "Ghost " you don’t take any damages. You’re also in adventure mode, which means you can’t place or destroy blocks, etc..
How to install:
- Download and install Minecraft Forge.
- Download the Resurrection Mod from link below.
- Go to .minecraft/mods folder. If the "mods" folder does not exist you can create one.
- Windows – Open the Start menu and select Run, or press the Windows key + R. Type (without quotes) "%appdata%\.minecraft\mods" and press Enter.
- OS X – Open the Go menu in Finder and select “Go to Folder”. Type (without quotes) "~/Library/Application Support/minecraft/mods" and press Return.
- Copy the downloaded jar (zip) file into the "mods" folder that opens.
- Enjoy the mod.