Random Mob on block destroy - semi harcode

Whenever a player destroys a blocktype for the first time, a random mob will become associated with that block. From that point onward, that particular mob will spawn whenever that block type is encountered. In the event of a player's death, all players will be reset and teleported to a new spawn point located 10,000 blocks to the north. Challenge yourself to complete the game using this approach. Good luck and have fun! :)

Known bugs in this version:

1. On reload, blocks are reset.
2. On reload, living players do not reset when another player dies (needs investigation to determine the cause).
3. On server restart, blocks are reset.
4. If a player dies after the server has been restarted, the player who didn't connect initially will not reset upon the next login.