Hemicyon Leather ★★★★

Taken all the way down to base materials, one Hemicyon Leather is 2 crafting steps deep and needs 1 intermediate — Camphor ×3 — which resolves to 4 distinct raw materials totalling 9 units, plus 10 crystals.

That bill outweighs 5,492 of the 13,602 recipes tracked here and 665 of the 1,844 Leatherworker ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 4 are burned by the intermediates, so the real crystal cost is 3 Earth Cluster, 3 Wind Cluster, 2 Lightning Cluster and 1 other kind.

The chain crosses two disciplines — Leatherworker to Lv 60 and Alchemist to Lv 60 — so no single class can finish it unaided.

2 of the 4 raw materials come out of the ground, and one of them is time-gated: Wattle Bark (2:00, 14:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Hemicyon Leather is itself consumed by 21 further recipes, spanning four of the eight crafting classes.