Some random invited me to do the Atheon encounter hard mode. I hadn't run it this week so I said sure. Did it twice, once on my Hunter and once on my Warlock. This is the tally of what dropped for me:

• Ascendant Energy
  
• Time Breaker
  
• Aspect of Glass
  
• Facade of the Hezen Lords
  
• Corrective Measure
  
• Corrective Measure (Again)
  
• Hard Light
  
• Vex Mythoclast

Now, with exception to the vehicles, those are all things I didn't have.

Suffice to say I am rather pleased at the moment.