Mighty Thunderdome ★★★★

Taken all the way down to base materials, one Mighty Thunderdome is 2 crafting steps deep and needs 3 intermediates — Gold Ingot ×3, Enchanted Gold Ink ×1 and Wolfram Ingot ×1 — which resolve to 10 distinct raw materials totalling 22 units, plus 19 crystals.

That bill outweighs 8,402 of the 13,602 recipes tracked here and 1,234 of the 2,216 Goldsmith 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 6 Wind Cluster, 5 Fire Cluster, 4 Lightning Cluster and 2 other kinds.

The chain crosses three disciplines — Goldsmith to Lv 50, Alchemist to Lv 50 and Blacksmith 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 18 Eorzean hours, about 53 real-world minutes.

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