Mounts of Mayhem is Minecraft's fourth game drop of 2025, launching on December 9 for both Java Edition (1.21.11) and Bedrock Edition (1.21.130). This update introduces thrilling new mounts, hostile jockeys, and combat-focused mobs to enhance exploration and battles across oceans, deserts, and plains. Key additions include tamable underwater rides, undead variants of familiar animals, and spear-wielding enemies. This guide details exact spawn locations, biomes, conditions, and tips for tracking down every new mob.

Summary Table of New Mobs and Spawn Biomes

Mob Primary Biomes Spawn Conditions Hostile/Tamable?
Nautilus All Ocean variants Y=38-58, groups of 1-3 Neutral/Tamable
Zombie Nautilus Oceans, Dripstone Caves With drowned trident jockey Hostile (until tamed)
Camel Husk Deserts Night, light level 0, with dual riders Hostile (until tamed)
Parched Deserts Night, replaces 50% of skeletons Hostile
Zombie Horse Plains, Savannas Night, with zombie iron spear rider Hostile (until tamed)

Nautilus

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The Nautilus is a tamable aquatic mount perfect for underwater adventures. It grants the "Breath of the Nautilus" effect, freezing your oxygen bar while ridden, and performs dash attacks for quick movement.

  • Spawn Biomes: All ocean biomes (frozen, cold, deep cold, deep frozen, lukewarm, warm, regular).
  • Conditions: Y levels 38 to 58; spawns in groups of 1-3; 50% chance in colder oceans, 45% in warm oceans, lower in others; 10% baby spawn chance in Bedrock Edition.
  • Tips: Dive into deep, cold oceans near shipwrecks or seagrass for best rates. Tame with pufferfish (first time), then breed with any fish bucket. Saddle it up and ride - no drowning worries!
  • Loot: 0-1 Nautilus Shell, 1-3 XP.
  • Health/Damage: Neutral unless provoked.

Zombie Nautilus

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This undead Nautilus variant often appears as a "jockey" with a trident-wielding drowned rider, ramping up ocean threats. A coral-covered version spawns in warm oceans.

  • Spawn Biomes: All oceans; Dripstone Caves (via drowned); warm oceans for coral variant.
  • Conditions: 50% chance when adult drowned with trident spawn; no peaceful mode; swims 10% faster than regular Nautilus.
  • Tips: Hunt drowned in oceans or caves - kill the rider first to tame the mount with pufferfish. It burns in sunlight but won't dehydrate on land. Great for tamed underwater speedsters.
  • Loot: 0-3 Rotten Flesh, 1-3 XP.
  • Health/Damage: 7.5 hearts; 1.25-2.25 hearts damage.

Camel Husk

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An undead twist on the camel, this mount spawns as a deadly triple threat with riders. Once riders are defeated, it turns tamable.

  • Spawn Biomes: Deserts.
  • Conditions: Nighttime, light level 0, on open ground; uncommon; always with husk (iron spear rider) and Parched skeleton.
  • Tips: Patrol desert surfaces at night. Clear the riders (husk first for hunger effect immunity), then heal/tame with rabbit's foot. Supports two players; can't breed.
  • Loot: 2-3 Rotten Flesh, 1-3 XP.
  • Health/Damage: 16 hearts; passive once tamed.

Parched

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A sun-resistant desert skeleton that fires Weakness arrows, slowing your melee attacks. Often rides Camel Husks.

  • Spawn Biomes: Deserts.
  • Conditions: Night, light level 0; replaces 50% of regular skeletons; part of Camel Husk jockeys.
  • Tips: Deserts are now skeleton central - equip shields against Weakness arrows. Slower fire rate than standard skeletons.
  • Loot: 0-2 Bones, 0-2 Arrows, 0-1 Arrow of Weakness, 5 XP.
  • Health/Damage: Standard skeleton stats; immune to Weakness.

Zombie Horse (Now Naturally Spawning)

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Zombie Horses are finally survival-accessible, spawning as "Zombie Horsemen" with spear zombies. Tame for a speedy undead steed.

  • Spawn Biomes: Plains and all variants, Savannas (on grass blocks).
  • Conditions: Night; regular zombie with iron spear as rider only.
  • Tips: Roam plains/savannas at night. Kill rider (may drop red mushroom), heal/tame horse with red mushrooms. Armor protects from sunlight burn; variable speed/jump.
  • Loot: 2-3 Rotten Flesh (horse), red mushroom (rider chance).
  • Health/Damage: 12.5-25 hearts; passive.

General Tips for Mob Hunting

  • Difficulty: Undead mobs (Camel Husk, Zombie Nautilus, Zombie Horse, Parched) skip peaceful mode.
  • Preparation: Bring spears for reach, nautilus armor for oceans, potions of water breathing (backup), and rabbit's feet/red mushrooms for taming.
  • Efficiency: Use chunkbase spawners or light up areas to force spawns. Explore at night in target biomes; oceans yield Nautilus/Zombie pairs, deserts pack jockey chaos.
  • Java vs. Bedrock: Spawns align closely, but Bedrock has minor baby rates and texture tweaks.

Gear up, explorer - the mayhem awaits on December 9! Update your game and ride into battle.