These days when Halaa is abandonded and you are still need to get Halaa Battle Token, to get the Halaa PvP Talbuk Mounts for example, there is an easy way to get these Marks.
Alliance has it much easier since equipping the Crystal of Zin-Malor (Alliance Quest that starts in Winterspring) will damage and kill you. The Crystal of Zin-Malor “Deals damage and drains 100 to 500 mana every second if you are not worthy.” If you die from this item you, and everyone else in your party, will get a Halaa Battle Token.
Alternatively you can bring a warlock who can lifetap and die to his own Hellfire, which will also result in a Halaa Battle Token for the warlock and everyone else in the party.
To speed things up I have a macro that will help with this. It will release your corpse and accept the Spirit Healers Spirit Resurrection.
/tar Spirit Healer
Here is a little Video: