Courtly Lover's Hairpin of Fending ★★★★

Taken all the way down to base materials, one Courtly Lover's Hairpin of Fending is 2 crafting steps deep and needs 4 intermediates — Grade 4 Gemsap of Vitality ×2, Urqopacha Linen ×2, 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 1,713 of the 2,216 Goldsmith 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 Wind Cluster, 9 Lightning Cluster, 8 Fire Crystal and 2 other kinds.

The chain crosses four disciplines — Goldsmith to Lv 100, Alchemist to Lv 100, Weaver to Lv 100 and Blacksmith to Lv 98 — 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: Rose Garnet Ore (0:00, 12:00), Urqopacha Flax (6:00, 18:00) and 1 other. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 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.