Oasis Lancet Window

Taken all the way down to base materials, one Oasis Lancet Window is 3 crafting steps deep and needs 3 intermediates — Clear Glass Lens ×4, Iron Ingot ×4 and Natron ×4 — which resolve to 5 distinct raw materials totalling 26 units, plus 26 crystals.

That bill outweighs 9,543 of the 13,602 recipes tracked here and 1,087 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 2 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 20 Water Shard, 5 Fire Shard and 1 Earth Shard.

The chain crosses two disciplines — Blacksmith to Lv 20 and Alchemist to Lv 28 — so no single class can finish it unaided.

One intermediate outranks the result: Clear Glass Lens is a Lv 28 Alchemist recipe feeding a Lv 20 craft, so that step, not the last one, is the real gate.

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