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Here she stands, posing before an almost complete collection of the Crusader's Relics. She had become head of the Fighter's Guild while searching for these relics, and after becoming the FG leader, she devoted almost all of her time to gathering up those who would be worthy to help her defeat Umaril.
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Along the way, she managed to snag this impressive full suit of golden Elven Armor. Those citizens of Tamriel who were lucky enough to have met her in the towns, however, probably saw her like this...
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Humble, dressed in rags, and visiting one of Cyrodiil's many chapels for long hours in quiet contemplation of The Nine.
As she finalized motions and gathered up the Knights of the Nine, she came across an unlikely team of helpful Lawful Good citizens, the Jemane brothers.
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Taking the Jemanes briefly around Cyrodiil, Dyan was proud of her little adventuring party, as she was now more confident at destroying any of Tamriel's evils. Long before finding the Jemanes, she frequently moaned about the lack of help she got from her so-called "Fighter's Guild" confidants. Well, no more.
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Unfortunately, the Jemanes eventually befouled her. OR did they?
As Dyan left Shardrock, the Jemanes having befelled this farmhouses menace of local black bears, Dyan realized the next day the Jemanes were nowhere to be seen! And one of them still had the Crusader's Sword! Dyan still managed to defeat Umaril without the Sword, however, as she used the infamous Akaviri Warblade to defeat him instead.
But after defeating Umaril, she was on the warpath to find the Crusader's Sword :verymad: and she eventually did. Although she forgot she had left the Jemanes at Shardrock, she was "on the way" to this farm cottage for a night of rest when she found the brothers.
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That is the final scene of her destiny. Did she return the Brothers to their home of Weatherleah? Did she manage to get the Sword back to its rightful place? Did the Brothers actually give the sword back, or did she have to take it back by force?
Such questions are lost to the ravages of time. And as this historian scribes the story of Dyan phor a'Cauz 200 years later here in Skyrim, all we can presume is that she, in fact, did manage to destroy Umaril, and saved the lands of Tamriel for years and years of peace and prosperity.