Mammet Lantern ★★

Taken all the way down to base materials, one Mammet Lantern is 3 crafting steps deep and needs 9 intermediates — Adamantite Ingot ×1, Astral Birch Lumber ×1, Astral Silk ×1 and 6 others — which resolve to 19 distinct raw materials totalling 70 units, plus 53 crystals.

That bill outweighs 13,294 of the 13,602 recipes tracked here and 1,866 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 49 are burned by the intermediates, so the real crystal cost is 16 Fire Crystal, 10 Wind Crystal, 5 Lightning Crystal and 6 other kinds.

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

13 of the 19 raw materials come out of the ground, and 7 of them are time-gated: Adamantite Ore (0:00, 2:00, 6:00, 10:00, 12:00, 14:00, 18:00, 22:00), Astral Moraine (0:00, 12:00) and 5 others. The widest gap between consecutive opening times is 4 Eorzean hours, about 12 real-world minutes.

Of the intermediates, Crawler Silk has the widest use: 178 recipes call for it, spanning five of the eight crafting classes.