
Season 15 changes the Mythic crafting decision completely: stop treating a Mythic attempt as a reroll gamble and start treating your best Unique copies as future upgrade seeds. The Horadric Cube’s Mythic reroll route is being removed in favor of a direct Mythic upgrade, so the important question is no longer “Can this become the Mythic I want?” It is “Is this Unique good enough to spend on the Mythic I already want?”
The trap is salvaging every duplicate Unique once your current build has one equipped. A build-defining Unique with strong Greater Affixes or a near-perfect roll may be far more valuable in your stash than another piece of salvage, especially if it can become the input for a later Mythic upgrade.
The old reroll-and-pray mindset made duplicate Mythics and crafting materials feel like lottery tickets. You could spend the resources and receive a Mythic that did not fit your class, build, slot, or immediate progression goal. That system encouraged players to chase enough attempts to overcome bad luck.
Direct upgrades shift the value toward planning. Once you can work toward a specific Mythic outcome, your farming should focus on securing a strong eligible Unique base and gathering the resources required for the upgrade. The target is known in advance, so every decision before the craft matters more.
Under direct upgrades, farming is usually the answer when your available Unique bases are weak. Do not rush an upgrade simply because you have enough materials. A mediocre input may get you the Mythic identity you wanted, but it can still leave you with a weaker long-term item than the base you could have waited for.

Use this simple decision order whenever a potential upgrade becomes available:
This is especially important for players changing builds later in the season. A Unique that is useless for your current setup can still be the ideal starting point for a different endgame build. Salvaging it early saves a little inventory space, then costs you another full farming cycle when you decide to pivot.
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Keep one best-in-slot copy of every Unique that is central to a build you are likely to run. “Best” does not mean you need a perfect item before you preserve it. It means the copy has clearly better affixes, stronger Greater Affixes, or a roll quality that would make it painful to lose.
A practical stash rule is to label the best copy as the protected one, then compare every new drop against it. If a new Unique beats the saved version, replace the saved copy and free the weaker one. That prevents the usual problem of holding every duplicate forever while still protecting the pieces that can matter.
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Once you have chosen a desired Mythic, split your goal into two separate grinds: find the best possible Unique input and build the crafting resources needed to convert it. Do not confuse those goals. Having the materials does not make a weak base desirable, and having a great base does not mean you should waste it on an upgrade that no longer fits your build plan.

Boss farming and other targeted endgame activities remain valuable because they give you repeated chances to improve the input side of the equation. Each useful Unique drop should be evaluated against your protected copy, rather than immediately treated as salvage because it is not an instant equip upgrade.
If you are farming content that uses Trace of Echoes, do not let those fragments sit in your inventory indefinitely. Trace of Echoes does not stack, and offering one to the Blind Eye in Temis opens a direct portal to Echoing Hatred. Using the fragment promptly prevents it from becoming dead inventory while you are sorting potential upgrade seeds.
Before committing to a Mythic upgrade, run through this short checklist. It is designed to catch the mistakes left over from the old reroll system.
The efficient Season 15 approach is simple: preserve quality Uniques first, choose the Mythic target second, and spend only when both line up. That turns Mythic crafting from a streak of reroll attempts into a controlled endgame upgrade plan.