Skybuilders' Broom

Taken all the way down to base materials, one Skybuilders' Broom is 2 crafting steps deep and needs 1 intermediate — Ramie Thread ×2 — which resolves to 4 distinct raw materials totalling 17 units, plus 8 crystals.

That bill outweighs 7,161 of the 13,602 recipes tracked here and 916 of the 1,968 Weaver ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 2 are burned by the intermediates, so the real crystal cost is 6 Lightning Crystal and 2 Wind Crystal.

Every step is Weaver work, from a Lv 54 intermediate up to the Lv 60 finish, so one class covers the whole chain.

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, Ramie Thread has the widest use: 85 recipes call for it, spanning three of the eight crafting classes.