Title pretty much explains the description but oh well.
OneChance is a very small (41 lines ) plugin where whenever a player dies, it bans and kicks them with the message: "You had one chance to live a good life, and we hope you did because you are banned."
Of course because of limitations in the Bukkit Player API I cannot set a ban message so you only see the message once.
Also becuase of my lazyness you can unban the player, but he/she comes in still dead, and becuase of the plugin listening for a respawn, it bans them again. The only way you can unban them is by removing the plugin or disabling the listeners somehow someway, and then restart the server and people can join. (but whoever got ban hammered is still dead)
1.1 makes it so you can rejoin after you died and got /pardon'ed but, its on a PlayerDeathEvent, so second you die, ban-kick.
If you still want the old one, i think you can find it in downloads updates.