Tremor Shield ★★★

Taken all the way down to base materials, one Tremor Shield is 2 crafting steps deep and needs 2 intermediates — Terminus Putty ×10 and Cobalt Ingot ×1 — which resolve to 7 distinct raw materials totalling 33 units, plus 29 crystals.

That bill outweighs 10,907 of the 13,602 recipes tracked here and 1,397 of the 1,591 Alchemist ones, and 4,464 recipes nest deeper.

Only 12 of those crystals go into the final step; the other 17 are burned by the intermediates, so the real crystal cost is 12 Earth Crystal, 8 Water Cluster, 5 Fire Shard and 1 other kind.

The chain crosses two disciplines — Alchemist to Lv 50 and Blacksmith to Lv 42 — so no single class can finish it unaided.

2 of the 7 raw materials match a gathering node, none of them timed; the other 5 come from vendors, drops or content this site does not track.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.