Oasis Partition Door ★★★

Taken all the way down to base materials, one Oasis Partition Door is 3 crafting steps deep and needs 5 intermediates — Walnut Lumber ×4, Ancient Lumber ×3, Electrum Ingot ×1 and 2 others — which resolve to 6 distinct raw materials totalling 25 units, plus 29 crystals.

That bill outweighs 9,313 of the 13,602 recipes tracked here and 963 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 26 are burned by the intermediates, so the real crystal cost is 13 Wind Shard, 8 Wind Cluster, 4 Ice Cluster and 2 other kinds.

The chain crosses four disciplines — Carpenter to Lv 50, Goldsmith to Lv 42, Armorer to Lv 26 and Blacksmith to Lv 26 — so no single class can finish it unaided.

5 of the 6 raw materials come out of the ground, and one of them is time-gated: Scarlet Sap (3:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Electrum Ingot has the widest use: 234 recipes call for it, spanning seven of the eight crafting classes.