The mana scoreboards are now personal - players will not see other players mana, only their own.
The mana scoreboard will appear on the sidebar as soon as the player switches to the wand, or uses it.
Other scoreboards will not be affected by the mana scoreboard and can co-exist. To see other scoreboards, the players need to switch to items other than the wand.
The mana scoreboard is automatically regenerated - no redstone clocks or command blocks required. The regen rate is 1 mana per second.
The maximum mana is specified in the config file. The default is 20.
Added the Protection Wand. The main action of the wand is a quick absorption effect, which gives the player the ability to absorb damage. The secondary action is damage resistance. Together they provide a powerful way to protect players in hardcore PvP.