The first three in your list occasionally drop from Dragon strikes thus also PoE 28 as they share the same loot pool.
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Are you sure that Lord High Fixer drops in Dragons strikes? Are you really sure?
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So you can get Lord High Fixer which is an incredibly rare weapon not available on Dragon, the Vanquisher, another rare weapon which is also unavailable on dragon strikes and a Prudence II which is also unavailable on dragon strikes on dragons strikes. Fascinating.
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