Mighty Thundercrack ★★★★

Taken all the way down to base materials, one Mighty Thundercrack is 2 crafting steps deep and needs 3 intermediates — Wolfram Ingot ×3, Gold Ingot ×1 and Saurian Leather ×1 — which resolve to 10 distinct raw materials totalling 20 units, plus 19 crystals.

That bill outweighs 7,876 of the 13,602 recipes tracked here and 851 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 15 are burned by the intermediates, so the real crystal cost is 7 Fire Cluster, 5 Earth Cluster, 4 Lightning Cluster and 1 other kind.

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

5 of the 10 raw materials come out of the ground, and 4 of them are time-gated: Ferberite (3:00), Gold Ore (9:00) and 2 others. The widest gap between consecutive opening times is 17 Eorzean hours, about 50 real-world minutes.

Of the intermediates, Gold Ingot has the widest use: 184 recipes call for it, spanning seven of the eight crafting classes.