Wootz Revolver ★★★★

Taken all the way down to base materials, one Wootz Revolver is 2 crafting steps deep and needs 3 intermediates — Wootz Ingot ×4, Platinum Ingot ×2 and Black Firesand ×1 — which resolve to 10 distinct raw materials totalling 46 units, plus 31 crystals.

That bill outweighs 12,540 of the 13,602 recipes tracked here and 1,675 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 14 Fire Cluster, 10 Earth Cluster, 4 Wind Cluster and 1 other kind.

The chain crosses three disciplines — Blacksmith to Lv 50, Goldsmith to Lv 50 and Alchemist to Lv 32 — so no single class can finish it unaided.

5 of the 10 raw materials come out of the ground, and one of them is time-gated: Platinum Ore (4:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Platinum Ingot has the widest use: 176 recipes call for it, spanning seven of the eight crafting classes.