Useful Commands

Here's a list with useful commands. Remember you can always use Tab to autocomplete and look through arguments.

Advancement Command
Progress of the advancements can be lost or bugged sometimes. To give someone certain advancements you can use the following (vanilla!) commands:

Examples
For granting all the advancements and all the stages:

WARNING: MAY CORRUPT WORLD

See also the official Minecraft Wiki.

nug
A list of dimension IDs can be found here.

Example

 * The tildes (~) for X Y Z mean that it will generate centered on the coordinates of the player who is invoking the command.
 * 5000 chunks in a spiral around the coordinate
 * 7 is the dimension id of The Twilight Forest
 * 20 is a recommended delay

Here's a clip of Darkosto himself explaining it.

Retrieve your grave Command
It can happen that the grave block is destroyed (usually by the hydra or Shoggoth Acid). To retrieve your grave and the contents you can use the one of the following commands:

For versions 3.0.8 and lower:

For versions 3.1.0 and higher:

3.0.8 and lower
Restore inventory to self.

Restore inventory to a player named darkosto.

3.1.0 and higher
Restore inventory to self.

Restore inventory to a player named darkosto.

Teleport
NOTE: When teleporting to a player directly, you will crossover to their dimension, no matter which of the following commands are used.

Vanilla Command (no dimension support):

Corails Tombstone Command (with dimension support):

A list of dimension IDs can be found here.

Examples
Teleport self to coordinate 0, 0, 0. WARNING: This is below bedrock and you will die.

Teleport self to current X, current Y, and current Z. Kind of pointless, but useful to understand for later examples.

Teleport self to coordinate that is current X - 10, current Y - 10, and current Z. (NOTE: If you teleport into blocks, you will suffocate and die.)

Teleport self to a player named darkosto.

Teleport a player named darkosto to a player named steve.

Teleport self to coordinate 0, 0, 0 in dimension 0 (Overworld). WARNING: This is below bedrock and you will die.

Teleport self to coordinate that is current X, current Y, and current Z in dimension 0 (Overworld).

Teleport self to coordinate that is current X - 10, current Y - 10, and current Z in dimension 0 (Overworld). (NOTE: If you teleport into blocks, you will suffocate and die.)

Teleport self to coordinate that is current X, current Y, and current Z in dimension 10 (The Beneath). (NOTE: If you teleport into blocks, you will suffocate and die.)

Teleport self to a player named darkosto.

Teleport a player named darkosto to a player named steve.

Change Server Difficulty
(Requires Ops on Server; also works for Local, but it's easier to use the GUI)

Valid values for level:
 * 0
 * peaceful
 * 1
 * easy
 * 2
 * normal
 * 3
 * hard

Examples
Sets difficulty to peaceful.

Also sets difficulty to peaceful.