Skana Prime. As a Prime Warframe, Excalibur Umbra Prime possesses a special passive ability where contact with an Orokin Void Death Orb will make them release an energy pulse that grants 250 Energy to all nearby allies. Because everywhere I look and there is a good looking Excalibur, they have that damn chest piece! Excalibur Prime was only obtainable by upgrading a Warframe account to Founders status of Hunter or greater, which is no longer available.He came with his own Warframe slot and was already augmented with an Orokin Reactor.. Excalibur Umbra is the only quest Warframe that cannot be purchased from the Market or be sold. Unlike Excalibur Umbra, Excalibur Umbra Prime's stats and abilities are identical to Excalibur Prime's. Apologies for the way i sound as i am sick and it was very early at the time of making this video. The Founders' program closed on the 1st of November, 2013, as announced on the warframe … Also, I'd like to compliment you for not using the Pakal Chest piece on your Excalibur. Excalibur Prime is a Founders-exclusive Warframe.. Acquisition. Excalibur Umbra is the first Umbra variant of a Warframe to be released in WARFRAME. Now make one without the Tennogen / Prime Access stuff for the poor feckers, like me. Excalibur Umbra's agile and noble animations are the only animations that are able to be used on other Warframes without prior purchase.