Attuning definitely does not work.
7 guns now and not one are what I attuned.
So attuning doesn’t work or is so marginal as to be irrelevant.
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turned in 200 token an hour or so ago with 1 edge transit (while attuned to edge transit) in 8 hours of farming legend I got 17 normal edges to drop and 0 shinies (arround 80 drops total in that 8 hours 21.25% drop rate from the runs ) and (a 5% drop rate from the tokens) kinda feel like whatever is attuned is set to drop less often not more often