Mighty Thunderstone ★★★★

Taken all the way down to base materials, one Mighty Thunderstone is 2 crafting steps deep and needs 2 intermediates — Gold Ingot ×3 and Wolfram Ingot ×2 — which resolve to 8 distinct raw materials totalling 21 units, plus 19 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 1,199 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 7 Fire Cluster, 6 Wind Cluster, 4 Lightning Cluster and 1 other kind.

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

4 of the 8 raw materials come out of the ground, and 3 of them are time-gated: Ferberite (3:00), Gold Ore (9:00) and 1 other. 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.