Oasis Lantern

Taken all the way down to base materials, one Oasis Lantern is 3 crafting steps deep and needs 3 intermediates — Clear Glass Lens ×2, Silver Ingot ×2 and Natron ×2 — which resolve to 5 distinct raw materials totalling 14 units, plus 18 crystals.

That bill outweighs 6,557 of the 13,602 recipes tracked here and 907 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 14 are burned by the intermediates, so the real crystal cost is 10 Water Shard, 6 Wind Shard and 2 Fire Shard.

The chain crosses two disciplines — Goldsmith to Lv 24 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 24 craft, so that step, not the last one, is the real gate.

4 of the 5 raw materials match a gathering node, none of them timed; the other 1 comes from vendors, drops or content this site does not track.