Head of the Dreadwyrm ★★★★

Taken all the way down to base materials, one Head of the Dreadwyrm is 2 crafting steps deep and needs 2 intermediates — Wolfram Ingot ×5 and Wootz Ingot ×2 — which resolve to 7 distinct raw materials totalling 21 units, plus 27 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 874 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 23 are burned by the intermediates, so the real crystal cost is 16 Fire Cluster and 11 Earth Cluster.

Every step is Blacksmith work, from a Lv 50 intermediate up to the Lv 50 finish, so one class covers the whole chain.

2 of the 7 raw materials come out of the ground, and one of them is time-gated: Ferberite (3:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Wolfram Ingot has the widest use: 107 recipes call for it, spanning five of the eight crafting classes.