In Burning Crusade Classic, many instances are locked if you don't complete certain quests or increase your reputation with certain factions. Worse yet, these restrictions also block access to later raids in the expansion.
In this guide, we'll walk you through how to access the Tempest Keep instances on Heroic difficulty once you reach Level 70 -- The Botanica, The Mechanar and The Arcatraz.
Important: All players in the group must have the Warpforged Key to access any of these instances in Heroic Difficulty. If one of the players does not have it, they will be left at the entrance.
To access the Heroic Difficulty of the above-mentioned instances, you must have the Warpforged Key sold by Almaador in Shattrath City, in the Terokkar Forrest.
However, to obtain this key, you need to reach Revered reputation with the Sha'tar.
To reach such a high level of reputation quickly, we strongly advise you to farm the Tempest Keep instances on Normal difficulty as soon as you reach the maximum level.
The most profitable instance to farm is probably The Botanica. Arcatraz is not bad either, but its difficulty makes it one of the most-avoided instances, especially at the beginning of Phase 1.