Oasis Mansion Wall (Stone) ★

Taken all the way down to base materials, one Oasis Mansion Wall (Stone) is 3 crafting steps deep and needs 4 intermediates — Mortar ×30, Clinker Bricks ×15, Cut Stone ×5 and 1 other — which resolve to 8 distinct raw materials totalling 225 units, plus 170 crystals.

That bill outweighs 13,575 of the 13,602 recipes tracked here and 2,209 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 20 of those crystals go into the final step; the other 150 are burned by the intermediates, so the real crystal cost is 135 Water Shard, 15 Wind Shard, 12 Wind Crystal and 1 other kind.

The chain crosses two disciplines — Goldsmith to Lv 50 and Alchemist to Lv 39 — so no single class can finish it unaided.

All 8 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, Mortar has the widest use: 140 recipes call for it, spanning six of the eight crafting classes.