Oasis Wall Chimney

Taken all the way down to base materials, one Oasis Wall Chimney is 3 crafting steps deep and needs 5 intermediates — Cut Stone ×3, Mortar ×3, Silver Ingot ×2 and 2 others — which resolve to 6 distinct raw materials totalling 33 units, plus 31 crystals.

That bill outweighs 10,907 of the 13,602 recipes tracked here and 1,755 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 8 of those crystals go into the final step; the other 23 are burned by the intermediates, so the real crystal cost is 21 Wind Shard, 6 Water Shard and 4 Fire Shard.

The chain crosses three disciplines — Goldsmith to Lv 36, Carpenter to Lv 25 and Alchemist to Lv 20 — so no single class can finish it unaided.

All 6 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, Silver Ingot has the widest use: 157 recipes call for it, spanning eight of the eight crafting classes.