Mhachi Coffin ★★

Taken all the way down to base materials, one Mhachi Coffin is 4 crafting steps deep and needs 10 intermediates — Hallowed Chestnut Lumber ×2, Holy Rainbow Cloth ×1, Undyed Woolen Cloth ×1 and 7 others — which resolve to 12 distinct raw materials totalling 34 units, plus 47 crystals.

That bill outweighs 11,052 of the 13,602 recipes tracked here and 1,145 of the 1,552 Carpenter ones, and 1 recipe nests deeper.

Only 4 of those crystals go into the final step; the other 43 are burned by the intermediates, so the real crystal cost is 18 Wind Crystal, 13 Water Crystal, 6 Lightning Crystal and 3 other kinds.

The chain crosses three disciplines — Carpenter to Lv 60, Alchemist to Lv 56 and Weaver to Lv 52 — so no single class can finish it unaided.

7 of the 12 raw materials come out of the ground, and 2 of them are time-gated: Abalathian Mistletoe (6:00, 18:00) and Dravanian Mistletoe (0:00, 12:00). The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Undyed Woolen Cloth has the widest use: 154 recipes call for it, spanning seven of the eight crafting classes.