Warframe Excalibur Umbra Sacrifice Story Mission Part One

Part One of two of the story mission Sacrifice to obtain the Excalibur Umbra. I only use my Excalibur Custom in this one. I normally don't post story missions cause it takes a lot of time to make. But, I hope you all enjoy it. Don't forget to like & comment. Click here for Part Two: https://www.youtube.com/watch?v=Cm5IiOUykWU