Oasis Pillar

Taken all the way down to base materials, one Oasis Pillar is 3 crafting steps deep and needs 4 intermediates — Cut Stone ×4, Mortar ×4, Mahogany Lumber ×2 and 1 other — which resolve to 5 distinct raw materials totalling 34 units, plus 39 crystals.

That bill outweighs 11,052 of the 13,602 recipes tracked here and 1,771 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 9 of those crystals go into the final step; the other 30 are burned by the intermediates, so the real crystal cost is 27 Wind Shard, 8 Water Shard and 4 Fire Shard.

The chain crosses three disciplines — Goldsmith to Lv 39, Carpenter to Lv 39 and Alchemist to Lv 20 — so no single class can finish it unaided.

All 5 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Mortar has the widest use: 140 recipes call for it, spanning six of the eight crafting classes.