Iron Lantern Shield

Taken all the way down to base materials, one Iron Lantern Shield is 3 crafting steps deep and needs 2 intermediates — Iron Plate ×2 and Iron Ingot ×4 — which resolve to 2 distinct raw materials totalling 13 units, plus 9 crystals.

That bill outweighs 6,426 of the 13,602 recipes tracked here and 599 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 6 are burned by the intermediates, so the real crystal cost is 4 Fire Shard, 4 Ice Shard and 1 Earth Shard.

The chain crosses two disciplines — Armorer to Lv 21 and Blacksmith to Lv 16 — so no single class can finish it unaided.

1 of the 2 raw materials matches a gathering node, none of them timed; the other 1 comes from vendors, drops or content this site does not track.

Of the intermediates, Iron Ingot has the widest use: 113 recipes call for it, spanning seven of the eight crafting classes.