Talk:Frost (Warframe)/@comment-87.68.247.43-20130605132920/@comment-64.30.100.153-20130609062527

"The Frost Prime blueprint itself may also be acquired from Tier 3 Void missions."

You can get it in Tier 2, but not lower than that. Did some runs with my clan today and got a couple pieces.

"One would have to buy Void keys, or can they be found? If so, where can one find Void Keys"

They are also given as rewards in high level Defense Missions finishing as little as 5 waves. I got around 4 or 5 Tier 2 keys today.