Dwarven Mythril Guillotine

Taken all the way down to base materials, one Dwarven Mythril Guillotine is 2 crafting steps deep and needs 4 intermediates — Dwarven Mythril Ingot ×3, Deepgold Ingot ×1, Dwarven Mythril Nugget ×1 and 1 other — which resolve to 8 distinct raw materials totalling 29 units, plus 55 crystals.

That bill outweighs 10,170 of the 13,602 recipes tracked here and 1,176 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 41 are burned by the intermediates, so the real crystal cost is 34 Fire Crystal, 7 Earth Crystal, 7 Water Crystal and 1 other kind.

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

6 of the 8 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.