Soul Speed

Soul Speed is a very rare armor enchantment in Minecraft 1.21. Soul Speed makes you move faster across soul sand and soul soil, two blocks that normally slow you to a crawl, turning the Nether's soul-sand valleys into express lanes.

Its opening level already delivers a noticeable boost — Slightly increased speed on soul blocks — and it climbs from there to a maximum of level 3 (III) on your boots.

Soul Speed tops out at level 3, shown as III on the boots, and the gap between the levels is where the enchantment's character really lives.

Its three levels each grant a bigger speed boost on soul blocks. The trade-off is durability — walking on soul blocks with the enchantment has a chance to wear your boots — so it consumes gear in a way most movement enchantments do not.

Soul Speed fits exactly one item — the boots — and nothing else will accept it, so it is a dedicated boots enchantment through and through.

Soul Speed has no exclusivity conflicts at all, so you can layer it onto a boots alongside every other enchantment that boots accepts without having to give anything up.

Soul Speed is a treasure enchantment, which means an enchanting table will never produce it. Your only routes are piglin bartering and bastion remnant loot, after which you combine the book onto your boots with an anvil.