08-25-2014, 02:53 AM (This post was last modified: 08-25-2014, 02:57 AM by martinison.)
Wish I could help more. The only mention of it I've been able to find is from the wiki which says it's a "crafting warp core". I assume that means it's part for the crafting system, but it also lists plasma-integrated under that even though it is part of the spire.
According to STO Wiki, the Deuterium-Stabilized as well as the Plasma-Integrated Warp Cores come from Crafting.
So, I looked into it and got you these Screenshots:
Both Warp Cores are available as Mk II, Mk IV, Mk VI, Mk VIII, Mk X, Mk XI and as Mk XII. I think it is reasonable to assume that they come in Common, Uncommon, Rare and Very Rare. With Engineering Crafting at Level 20, it might be even possible to craft an ultra rare one, but that is purely hypothetical.
(08-25-2014, 11:41 AM)Attilio Wrote: Hmm I wonder if they were in the old crafting system too. The person who emailed me about it said they were missing for months.
It is possible, that they also exist as Loot drops since the introduction of the Fleet Spire as it has Fleet versions of the Plasma-Integrated Warp Core available. However, this is speculation on my part.