Wind-up Leviathan ★

Taken all the way down to base materials, one Wind-up Leviathan is 3 crafting steps deep and needs 3 intermediates — Chimerical Felt ×1, Crawler Silk ×1 and Natron ×1 — which resolve to 8 distinct raw materials totalling 16 units, plus 111 crystals.

That bill outweighs 6,959 of the 13,602 recipes tracked here and 860 of the 1,968 Weaver ones, and 337 recipes nest deeper.

Only 99 of those crystals go into the final step; the other 12 are burned by the intermediates, so the real crystal cost is 101 Water Shard and 10 Lightning Crystal.

The chain crosses two disciplines — Weaver to Lv 60 and Alchemist to Lv 25 — 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: Silkworm Cocoon (1:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Crawler Silk has the widest use: 178 recipes call for it, spanning five of the eight crafting classes.