Rarefied Mythrite Katzbalger

Taken all the way down to base materials, one Rarefied Mythrite Katzbalger is 2 crafting steps deep and needs 3 intermediates — Mythrite Nugget ×2, Archaeornis Leather ×1 and Cedar Lumber ×1 — which resolve to 5 distinct raw materials totalling 21 units, plus 15 crystals.

That bill outweighs 8,152 of the 13,602 recipes tracked here and 874 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 12 are burned by the intermediates, so the real crystal cost is 8 Fire Crystal, 4 Earth Crystal and 3 Wind Crystal.

The chain crosses three disciplines — Blacksmith to Lv 51, Carpenter to Lv 51 and Leatherworker to Lv 51 — so no single class can finish it unaided.

One intermediate outranks the result: Mythrite Nugget is a Lv 51 Blacksmith recipe feeding a Lv 50 craft, so that step, not the last one, is the real gate.

4 of the 5 raw materials come out of the ground, and one of them is time-gated: Coerthan Tea Leaves (0:00, 8:00, 10:00, 12:00, 20:00, 22:00). The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.