High Steel Scythe

Taken all the way down to base materials, one High Steel Scythe is 3 crafting steps deep and needs 4 intermediates — High Steel Ingot ×2, Larch Lumber ×1, Slate Whetstone ×1 and 1 other — which resolve to 5 distinct raw materials totalling 25 units, plus 24 crystals.

That bill outweighs 9,313 of the 13,602 recipes tracked here and 1,056 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 18 are burned by the intermediates, so the real crystal cost is 15 Fire Crystal, 6 Wind Crystal and 3 Earth Crystal.

The chain crosses three disciplines — Blacksmith to Lv 62, Carpenter to Lv 62 and Goldsmith to Lv 61 — so no single class can finish it unaided.

All 5 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, High Steel Nugget has the widest use: 133 recipes call for it, spanning seven of the eight crafting classes.