Horse Chestnut Rod

Taken all the way down to base materials, one Horse Chestnut Rod is 3 crafting steps deep and needs 5 intermediates — Ametrine ×2, Horse Chestnut Lumber ×2, Sea Swallow Leather ×1 and 2 others — which resolve to 7 distinct raw materials totalling 33 units, plus 77 crystals.

That bill outweighs 10,907 of the 13,602 recipes tracked here and 1,116 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 15 of those crystals go into the final step; the other 62 are burned by the intermediates, so the real crystal cost is 56 Wind Crystal, 7 Earth Crystal, 7 Ice Crystal and 1 other kind.

The chain crosses four disciplines — Carpenter to Lv 81, Goldsmith to Lv 81, Leatherworker to Lv 78 and Alchemist to Lv 75 — so no single class can finish it unaided.

4 of the 7 raw materials match a gathering node, none of them timed; the other 3 come from vendors, drops or content this site does not track.

Of the intermediates, Sea Swallow Leather has the widest use: 124 recipes call for it, spanning six of the eight crafting classes.