Mythril-barreled Carbine

Taken all the way down to base materials, one Mythril-barreled Carbine is 2 crafting steps deep and needs 5 intermediates — Black Firesand ×1, Boar Leather ×1, Brass Ingot ×1 and 2 others — which resolve to 9 distinct raw materials totalling 19 units, plus 23 crystals.

That bill outweighs 7,589 of the 13,602 recipes tracked here and 804 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 8 of those crystals go into the final step; the other 15 are burned by the intermediates, so the real crystal cost is 8 Earth Shard, 8 Fire Shard, 4 Wind Shard and 1 other kind.

The chain crosses five disciplines — Blacksmith to Lv 38, Leatherworker to Lv 33, Alchemist to Lv 32, Carpenter to Lv 32 and Goldsmith to Lv 14 — so no single class can finish it unaided.

8 of the 9 raw materials match a gathering node, none of them timed; the other 1 comes from vendors, drops or content this site does not track.

Of the intermediates, Mythril Ingot has the widest use: 135 recipes call for it, spanning seven of the eight crafting classes.