SafePlace is a Pixelmon sidemod that allows spawn points to be set in a world that players will automatically be teleported to if all of their Pokémon faint, emulating the "black out" that occurs in the Pokémon games when all Pokémon in a Trainer's party faint. Several spawn points can be set at a time, and players that get teleported will go to the closest spawn point.

Installation :
On servers, SafePlace is server-side and does not need to be installed by each individual player to be used.

Minecraft launcher
Download SafePlace for your version of Minecraft here.
Place the downloaded file in the mods folder.
Pixelmon launcher
Edit your profile and choose the "Add Official Sidemod" option.
Select SafePlace from the list.
Commands
Note: Command syntax is displayed in the standard Minecraft command format. An explanation of this format can be found here.

/safeplace add: Adds a spawn point where the player is standing.
/safeplace delete: Deletes the closest spawn point to the player.
/safeplace list: All spawn points will be listed, including their dimension and coordinates (x/y/z).
/safeplace tp: Teleports the player to the closest spawn point.
Permission nodes
All four commands are enabled with the same permission node.

/safeplace: safeplace.command.safeplace