>>536648558
you can buy a weapon with the totems and desynth it. You have a 1% chance per desynth to acquire the same item used to make the shiny weapons which is the same item used for the housing item or chocobo barding so you can stockpile the item just by winning the drops before the shiny weapons come out as well.
If you buy weapons to desyth, there's 2 things to keep in mind:
1) Your desynth level DOES NOT MATTER when it comes to getting the trial item, mazing your desynth does not increase your chances whatsoever, apparently all it does it give a slightly higher chance at getting an HQ ingot instead of a NQ ingot lol, utterly worthless
2) The shield for PLD will not give the trial item from desynth. It used to, but they nerfed it like an expansion ago I wanna say, That said, the PLD sword is only 7 totems and it does drop the item so you can spam purchase the PLD sword and desynth away.