Auchindoun: Mana-Tombs

From Twilight Wiki

Level Range: 64-66
# of bosses: 3 (4 on heroic)
Dungeon Size: Medium
Wowhead Link: http://www.wowhead.com/?zone=3792

One thing that needs to be said about Mana Tombs, is that it is not at all friendly to mana users. There are a crapload of mobs that will sap away your mana. Above all, bring LOTS of water as you will need to recover mana after almost every fight.

Ideally you have a rogue and a warrior as group members, since they have no mana and are immune to these affects. Warlocks with Dark Pact and Life Tap also minimize the mana burning effect.

Nexus-Prince Shaffar: Final Boss Strategy

Have MT on the boss, everyone DPS the adds as fast as possible until they are down before starting to heal (and switch to the boss). This means that everyone needs to be able to survive until the adds are down.

Escort Quest

Inside Mana Tombs, there is an escort quest near the final boss that will take you back to the entrance to the zone. If you intend on doing this group quest, it is highly recommended that you clear out every mob in the instance first. The friendly NPC you need to protect will walk a path that will aggro anyone you have left alive and since there are runners, you will likely encounter more than you can handle before the quest completes. It must be stressed that you CANNOT restart the quest if you fail unless you reset the dungeon as the person you need to talk to is now dead and will not respawn.