Talk:Excalibur/Umbra/@comment-80.194.134.110-20180506174209/@comment-2602:304:B014:B470:999C:8D7A:B71F:7CEA-20180528221634

But it's been stated that it's going to be a separate Warframe.

I'm pretty sure the "sacrifice" is just a story about Margulis' original sacrifice for the Tenno. Or perhaps the Sentient Lotus' sacrifice, either way.