Dwarven Mythril Pistol

Taken all the way down to base materials, one Dwarven Mythril Pistol is 2 crafting steps deep and needs 5 intermediates — Crimson Firesand ×1, Dwarven Mythril Ingot ×1, Dwarven Mythril Nugget ×1 and 2 others — which resolve to 10 distinct raw materials totalling 25 units, plus 48 crystals.

That bill outweighs 9,313 of the 13,602 recipes tracked here and 1,056 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 34 are burned by the intermediates, so the real crystal cost is 14 Fire Crystal, 14 Wind Crystal, 13 Water Crystal and 1 other kind.

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

8 of the 10 raw materials match a gathering node, none of them timed; the other 2 come from vendors, drops or content this site does not track.

Of the intermediates, Dwarven Mythril Ingot has the widest use: 168 recipes call for it, spanning seven of the eight crafting classes.