Oasis Bookshelf

Taken all the way down to base materials, one Oasis Bookshelf is 3 crafting steps deep and needs 7 intermediates — Mahogany Lumber ×3, Rosewood Lumber ×3, Clear Glass Lens ×2 and 4 others — which resolve to 9 distinct raw materials totalling 42 units, plus 80 crystals.

That bill outweighs 12,044 of the 13,602 recipes tracked here and 1,260 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 11 of those crystals go into the final step; the other 69 are burned by the intermediates, so the real crystal cost is 49 Wind Shard, 26 Water Shard and 5 Ice Shard.

The chain crosses three disciplines — Carpenter to Lv 45, Goldsmith to Lv 42 and Alchemist to Lv 41 — 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, Electrum Ingot has the widest use: 234 recipes call for it, spanning seven of the eight crafting classes.