Diadochos Sword ★★★★

Taken all the way down to base materials, one Diadochos Sword is 2 crafting steps deep and needs 3 intermediates — Softsilver Ingot ×3, Chondrite Ingot ×1 and Grade 8 Vitality Alkahest ×1 — which resolve to 8 distinct raw materials totalling 33 units, plus 38 crystals.

That bill outweighs 10,907 of the 13,602 recipes tracked here and 1,266 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 32 are burned by the intermediates, so the real crystal cost is 12 Earth Cluster, 12 Fire Cluster, 8 Fire Crystal and 2 other kinds.

The chain crosses two disciplines — Blacksmith to Lv 90 and Alchemist to Lv 90 — so no single class can finish it unaided.

5 of the 8 raw materials come out of the ground, and 2 of them are time-gated: Lovingbloom (0:00, 12:00) and Softsilver Ore (4:00, 16:00). The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Of the intermediates, Chondrite Ingot has the widest use: 210 recipes call for it, spanning seven of the eight crafting classes.