Initiate's Chaser Hammer

Taken all the way down to base materials, one Initiate's Chaser Hammer is 3 crafting steps deep and needs 3 intermediates — Iron Ingot ×2, Iron Rivets ×1 and Yew Lumber ×1 — which resolve to 2 distinct raw materials totalling 9 units, plus 8 crystals.

That bill outweighs 5,492 of the 13,602 recipes tracked here and 597 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 5 are burned by the intermediates, so the real crystal cost is 5 Fire Shard, 2 Wind Shard and 1 Earth Shard.

The chain crosses two disciplines — Blacksmith to Lv 21 and Carpenter to Lv 21 — so no single class can finish it unaided.

Both raw materials are gathered, and no spot for either is timed, so nothing in the tree waits on the Eorzean clock.

Initiate's Chaser Hammer is itself consumed by 1 further recipe, all of them Blacksmith recipes.