There is a chest inside of a cave, across from the Court of Oryx. This chest requires no key, but it takes several seconds to open, while damaging the player with a status effect named "Taken Consumption". To successfully open it, the player can collect a Taken relic from killing Taken for a ritual in a nearby room. The relic will then give the player a status effect named "Interloper", which provides immunity from Taken Consumption. The player can also use a Super that reduces damage, such as Bladedancer, Sunsinger, or Defender; or one of any Sword that is fully upgraded and fully stocked to defend. Inside the chest is an Engram, a Reciprocal Rune, Wormspore, and a Calcified Fragment.
During the Story mission The Dreadnaught, after destroying the final conduit for the Dreadnaught's main weapon, the player can approach the dais where the Court of Oryx can be initiated in Patrol. Thalnok, Fanatic of Crota will exit from the portal with two Hallowed Wizards, but will disappear after a brief wait. Approaching the throne on the dais and scanning it with Ghost will reveal that the throne is the receptacle for the communications from the Shrines of Oryx.