Neo-Ishgardian Codex ★★★

Taken all the way down to base materials, one Neo-Ishgardian Codex is 2 crafting steps deep and needs 4 intermediates — Grade 3 Mind Alkahest ×2, Megalania Leather ×2, Merbau Lumber ×2 and 1 other — which resolve to 12 distinct raw materials totalling 36 units, plus 31 crystals.

That bill outweighs 11,383 of the 13,602 recipes tracked here and 1,447 of the 1,591 Alchemist ones, and 4,464 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 8 Wind Cluster, 7 Water Crystal, 4 Earth Cluster and 3 other kinds.

The chain crosses three disciplines — Alchemist to Lv 80, Carpenter to Lv 80 and Leatherworker to Lv 80 — so no single class can finish it unaided.

6 of the 12 raw materials come out of the ground, and 3 of them are time-gated: Ashen Alumen (10:00, 22:00), Imperial Fern (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, Megalania Leather has the widest use: 50 recipes call for it, spanning six of the eight crafting classes.