Sky Rat Mask of Aiming ★★★★

Taken all the way down to base materials, one Sky Rat Mask of Aiming is 2 crafting steps deep and needs 3 intermediates — Cloud Mythril Ingot ×2, Grade 2 Dexterity Dissolvent ×1 and High Mythrite Nugget ×1 — which resolve to 7 distinct raw materials totalling 16 units, plus 34 crystals.

That bill outweighs 6,959 of the 13,602 recipes tracked here and 1,002 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 28 are burned by the intermediates, so the real crystal cost is 9 Fire Cluster, 7 Earth Crystal, 7 Fire Crystal and 4 other kinds.

The chain crosses three disciplines — Goldsmith to Lv 60, Alchemist to Lv 60 and Blacksmith to Lv 60 — so no single class can finish it unaided.

4 of the 7 raw materials come out of the ground, and 2 of them are time-gated: Cloud Mythril Ore (2:00, 6:00, 10:00, 14:00, 18:00, 22:00) and Clary Sage (0:00, 20:00). The widest gap between consecutive opening times is 4 Eorzean hours, about 12 real-world minutes.

Of the intermediates, High Mythrite Nugget has the widest use: 32 recipes call for it, spanning four of the eight crafting classes.