Shinryu's Ephemeral Grimoire ★★

Taken all the way down to base materials, one Shinryu's Ephemeral Grimoire is 2 crafting steps deep and needs 3 intermediates — True Griffin Leather ×3, Enchanted Palladium Ink ×2 and Torreya Lumber ×2 — which resolve to 10 distinct raw materials totalling 46 units, plus 34 crystals.

That bill outweighs 12,540 of the 13,602 recipes tracked here and 1,508 of the 1,591 Alchemist ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 30 are burned by the intermediates, so the real crystal cost is 10 Water Crystal, 10 Wind Cluster, 6 Earth Cluster and 3 other kinds.

The chain crosses three disciplines — Alchemist to Lv 70, Carpenter to Lv 70 and Leatherworker to Lv 70 — so no single class can finish it unaided.

5 of the 10 raw materials come out of the ground, and 2 of them are time-gated: Chromite Ore (10:00, 22:00) and Torreya Log (6:00, 18:00). The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Of the intermediates, True Griffin Leather has the widest use: 77 recipes call for it, spanning seven of the eight crafting classes.