Neo-Ishgardian Blade ★★★

Taken all the way down to base materials, one Neo-Ishgardian Blade is 3 crafting steps deep and needs 5 intermediates — Cobalt Alloy Ingot ×2, Grade 3 Strength Alkahest ×2, Merbau Lumber ×2 and 2 others — which resolve to 10 distinct raw materials totalling 35 units, plus 31 crystals.

That bill outweighs 11,223 of the 13,602 recipes tracked here and 1,335 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 27 are burned by the intermediates, so the real crystal cost is 7 Lightning Crystal, 6 Earth Cluster, 6 Fire Cluster and 4 other kinds.

The chain crosses four disciplines — Blacksmith to Lv 80, Alchemist to Lv 80, Carpenter to Lv 80 and Weaver to Lv 78 — so no single class can finish it unaided.

5 of the 10 raw materials come out of the ground, and 3 of them are time-gated: Fireheart Cobalt (2:00, 14:00), Imperial Fern (0:00, 12:00) and 1 other. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Dwarven Cotton has the widest use: 165 recipes call for it, spanning eight of the eight crafting classes.