Book of Mythril

Taken all the way down to base materials, one Book of Mythril is 2 crafting steps deep and needs 2 intermediates — Mythril Ingot ×2 and Enchanted Mythril Ink ×1 — which resolve to 4 distinct raw materials totalling 10 units, plus 22 crystals.

That bill outweighs 5,754 of the 13,602 recipes tracked here and 1,122 of the 1,591 Alchemist ones, and 4,464 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 12 are burned by the intermediates, so the real crystal cost is 9 Water Shard, 8 Fire Shard and 5 Lightning Shard.

The chain crosses two disciplines — Alchemist to Lv 42 and Blacksmith to Lv 38 — so no single class can finish it unaided.

3 of the 4 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.