Island Prism ★★

Taken all the way down to base materials, a batch of 3 Island Prism is 2 crafting steps deep and needs 1 intermediate — Enchanted High Durium Ink ×3 — which resolves to 4 distinct raw materials totalling 20 units, plus 30 crystals.

That bill outweighs 7,876 of the 13,602 recipes tracked here and 1,279 of the 1,591 Alchemist ones, and 4,464 recipes nest deeper.

Only 6 of those crystals go into the final step; the other 24 are burned by the intermediates, so the real crystal cost is 24 Water Crystal, 3 Lightning Cluster and 3 Water Cluster.

Every step is Alchemist work, from a Lv 81 intermediate up to the Lv 90 finish, so one class covers the whole chain.

2 of the 4 raw materials match a gathering node, none of them timed; the other 2 come from vendors, drops or content this site does not track.

Of the intermediates, Enchanted High Durium Ink has the widest use: 12 recipes call for it, spanning three of the eight crafting classes.