Edit: [i][u]Red♦️Text[/u][/i] answered our summons, and has provided us, on this day of July 5th 2018, with Excalibur Umbra (and some QoL stuff like
new UI, etc.). I will cherish this day forever.
May the RNG gods bless you with many prime sets, Tenno.
https://forums.warframe.com/topic/975950-ps4-the-sacrifice-update-23-launching-july-5th/
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PC player and I still haven't played it yet. I have 4 or 5 quests left to finish first. I've seen a lot of people loving Umbra though.