TL;DR: The 4 enchantments that change Nether survival: Protection IV (armor), Smite V (sword), Efficiency V (pickaxe), and Mending (anything). Everything else is useful but not essential for the first 20 Nether trips.
Most players try to enchant everything and end up with nothing useful on anything. The Nether rewards focused enchanting.
The 4 that matter
Protection IV on all armor pieces. This reduces all damage by 64% at max level across all 4 pieces. In the Nether, where you take Ghast fireballs, Blaze shots, Piglin sword strikes, and Brute axe hits, that reduction keeps you alive long enough to make decisions.
Smite V on your sword. Smite deals extra damage to undead mobs. The Nether has Wither Skeletons and Zombified Piglins — both undead. Smite deals 2.5× damage against them. A Smite V diamond sword kills a Wither Skeleton in 2 hits on Normal. Without it: 4 hits.
Efficiency V on your pickaxe. The Nether requires a lot of fast mining — emergency bunkers, ceiling access, ancient debris. Efficiency V means 1 second per netherrack block instead of 3. Over a 20-minute trip, this makes a meaningful difference.
Mending on your best tool or your most-used armor piece. Mending repairs the item using XP as you collect it. In the Nether, you collect XP from killing mobs and mining quartz ore constantly. Your gear repairs itself. Without Mending, you'll need to use anvils and XP to repair constantly.
What's useful but not essential (for now)
Fire Protection — Fire damage in the Nether comes mostly from standing in lava, not from ambient sources. Protection IV already covers Ghast fireballs. Fire Protection is useful for lava swimming with fire resistance if you're doing it frequently.
Looting III on your sword — increases rare drops (skull drop rate from Wither Skeletons, blaze rod count from Blazes). Worth having eventually, not a first priority.
Unbreaking III — helps gear last longer. Less important if you already have Mending, but pairs well with it.
Fortune III on your pickaxe — increases Nether quartz drops significantly. Excellent for XP farming sessions.
Soul Speed on boots — if you're frequently crossing Soul Sand Valleys, this changes everything. But it only comes from Piglin bartering.
Enchanting efficiency tips
At level 30 (a full bookshelves setup), you get the best enchantment combinations. 15 bookshelves in an L-shape around the table is enough.
Before enchanting your main gear: enchant a cheap item first (a wood axe or book) to burn off bad levels. This rotates the available enchantments.
Anvils combine books. Combine two Smite I books → Smite II → III → IV → V. This lets you target specific enchantments instead of gambling.
Common mistakes
- Enchanting before you have XP. You need 30 levels for max enchanting. Farm quartz in the Nether for fast XP gain.
- Using Protection and Fire Protection on the same armor piece. They're mutually exclusive — only one damage reduction type per armor piece.
- Forgetting Mending until the gear breaks. Add it via anvil as soon as you find a Mending book.
- Enchanting tools you don't use much. Efficiency V on a hoe is fine, but a pickaxe gets used on every trip.
A closing thought
Enchanting is the Nether's system of preparation. Players who enchant thoughtfully come home. Players who enchant randomly come home eventually, with more deaths along the way.
Pair with Netherite Armor and Before You Fight the Wither.
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