Rapier of the Demon ★★★

Taken all the way down to base materials, one Rapier of the Demon is 2 crafting steps deep and needs 2 intermediates — Eikon Iron Ingot ×3 and High Mythrite Ingot ×2 — which resolve to 8 distinct raw materials totalling 44 units, plus 30 crystals.

That bill outweighs 12,337 of the 13,602 recipes tracked here and 1,982 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 25 are burned by the intermediates, so the real crystal cost is 14 Fire Cluster, 12 Wind Cluster and 4 Earth Cluster.

The chain crosses two disciplines — Goldsmith to Lv 60 and Blacksmith to Lv 60 — so no single class can finish it unaided.

4 of the 8 raw materials come out of the ground, and 2 of them are time-gated: Lumythrite Ore (2:00, 14:00) and Smithsonite Ore (8:00, 20:00). The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, High Mythrite Ingot has the widest use: 150 recipes call for it, spanning seven of the eight crafting classes.