Much of the Chains of Domination content WOW WOTLK Classic Gold is featured in the PTR, but the Sanctum of Domination raid is currently not available. It's set to launch the 16th of April, which is when the Tarragrue as well as the Guardian of the First Ones encounters from it will be made available to players who want to test it. You can read the complete patches notes from the PTR update of...