The Fae's Crown Tathlums ★★

Taken all the way down to base materials, one The Fae's Crown Tathlums is 2 crafting steps deep and needs 3 intermediates — Tungsten Steel Ingot ×4, Chalicotherium Leather ×1 and Dwarven Mythril Nugget ×1 — which resolve to 8 distinct raw materials totalling 44 units, plus 31 crystals.

That bill outweighs 12,337 of the 13,602 recipes tracked here and 1,595 of the 1,932 Blacksmith 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 12 Earth Cluster, 10 Fire Cluster, 7 Wind Crystal and 1 other kind.

The chain crosses three disciplines — Blacksmith to Lv 80, Leatherworker to Lv 80 and Goldsmith to Lv 78 — so no single class can finish it unaided.

3 of the 8 raw materials come out of the ground, and one of them is time-gated: Tungsten Ore (10:00, 22:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Dwarven Mythril Nugget has the widest use: 154 recipes call for it, spanning seven of the eight crafting classes.