Militia Harness ★

Taken all the way down to base materials, one Militia Harness is 2 crafting steps deep and needs 3 intermediates — Darksteel Nugget ×2, Boar Leather ×1 and Hippogryph Leather ×1 — which resolve to 5 distinct raw materials totalling 10 units, plus 18 crystals.

That bill outweighs 5,754 of the 13,602 recipes tracked here and 691 of the 1,844 Leatherworker ones, and 4,464 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 13 are burned by the intermediates, so the real crystal cost is 6 Earth Crystal, 6 Fire Crystal, 4 Earth Shard and 1 other kind.

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

3 of the 5 raw materials come out of the ground, and one of them is time-gated: Darksteel Ore (1:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Hippogryph Leather has the widest use: 131 recipes call for it, spanning seven of the eight crafting classes.