Marimba

Taken all the way down to base materials, one Marimba is 2 crafting steps deep and needs 3 intermediates — Rosewood Lumber ×7, Ironwood Lumber ×4 and Manganese Ingot ×3 — which resolve to 4 distinct raw materials totalling 59 units, plus 114 crystals.

That bill outweighs 13,079 of the 13,602 recipes tracked here and 1,413 of the 1,552 Carpenter ones, and 4,464 recipes nest deeper.

Only 16 of those crystals go into the final step; the other 98 are burned by the intermediates, so the real crystal cost is 42 Wind Shard, 40 Wind Crystal, 24 Fire Crystal and 1 other kind.

The chain crosses two disciplines — Carpenter to Lv 86 and Blacksmith to Lv 86 — so no single class can finish it unaided.

All 4 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Manganese Ingot has the widest use: 134 recipes call for it, spanning seven of the eight crafting classes.