Exarchic Gloves of Casting ★★★★

Taken all the way down to base materials, one Exarchic Gloves of Casting is 2 crafting steps deep and needs 4 intermediates — Grade 4 Intelligence Alkahest ×2, Thylacoleo Leather ×2, Dwarven Mythril Nugget ×1 and 1 other — which resolve to 10 distinct raw materials totalling 30 units, plus 37 crystals.

That bill outweighs 10,368 of the 13,602 recipes tracked here and 1,521 of the 1,844 Leatherworker ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 31 are burned by the intermediates, so the real crystal cost is 12 Wind Cluster, 9 Earth Cluster, 7 Wind Crystal and 2 other kinds.

The chain crosses four disciplines — Leatherworker to Lv 80, Alchemist to Lv 80, Weaver to Lv 80 and Goldsmith to Lv 78 — so no single class can finish it unaided.

6 of the 10 raw materials come out of the ground, and 3 of them are time-gated: Hard Water (4:00, 16:00), Raindrop Cotton Boll (10:00, 22:00) and 1 other. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Dwarven Mythril Nugget has the widest use: 154 recipes call for it, spanning seven of the eight crafting classes.