Neo-Ishgardian Planisphere ★★★

Taken all the way down to base materials, one Neo-Ishgardian Planisphere is 2 crafting steps deep and needs 4 intermediates — Cobalt Alloy Ingot ×2, Grade 3 Mind Alkahest ×2, Purpure Bead ×2 and 1 other — which resolve to 11 distinct raw materials totalling 36 units, plus 31 crystals.

That bill outweighs 11,383 of the 13,602 recipes tracked here and 1,827 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 27 are burned by the intermediates, so the real crystal cost is 10 Fire Cluster, 7 Wind Crystal, 6 Wind Cluster and 3 other kinds.

The chain crosses three disciplines — Goldsmith to Lv 80, Alchemist to Lv 80 and Blacksmith to Lv 80 — so no single class can finish it unaided.

6 of the 11 raw materials come out of the ground, and 3 of them are time-gated: Fireheart Cobalt (2:00, 14:00), Imperial Fern (0:00, 12:00) and 1 other. The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

Of the intermediates, Dwarven Mythril Nugget has the widest use: 154 recipes call for it, spanning seven of the eight crafting classes.