Courtly Lover's Sword ★★★★

Taken all the way down to base materials, one Courtly Lover's Sword is 2 crafting steps deep and needs 4 intermediates — Double Duraluminum Ingot ×2, Grade 4 Gemsap of Vitality ×1, Ra'Kaznar Ingot ×1 and 1 other — which resolve to 10 distinct raw materials totalling 31 units, plus 38 crystals.

That bill outweighs 10,578 of the 13,602 recipes tracked here and 1,210 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 Fire Cluster, 9 Earth Cluster, 8 Fire Crystal and 3 other kinds.

The chain crosses three disciplines — Blacksmith to Lv 100, Alchemist to Lv 100 and Goldsmith to Lv 100 — so no single class can finish it unaided.

7 of the 10 raw materials come out of the ground, and 3 of them are time-gated: Dense Aluminum Ore (10:00, 22:00), Rose Garnet Ore (0:00, 12:00) and 1 other. The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Of the intermediates, Ra'Kaznar Ingot has the widest use: 166 recipes call for it, spanning seven of the eight crafting classes.