Java Edition guides/Frostburn Update

This guide is a simplified overview of all the changes in the Frostburn Update ( 1.10.x releases), which assumes at least some familiarity with the Combat Update (Java Edition 1.9.x releases).
== Mobs ==
=== New ===
Polar Bear		
* Polar bears spawn in ice plains, ice mountains and ice plains spikes biomes.	
 or 
* (when killed by a player or tamed wolf)	
* When hit, the adults will attack the player, the cubs will run away.
* Adults will always attack the player when cubs are around.
* Polar bear cubs will follow adults.
* Polar bears can swim fast in water.
Husk 		
* 80% of zombies spawned under the sky in desert, desert hills and desert M biomes will be husks.	
 
* ( if it's a baby), plus per equipment piece (when killed by a player or tamed wolf)
Spawned Equipment	
* Husks behave like a normal zombie.
* Husks do not burn in sunlight.
* Husks apply when attacking.
** is only applied if husk has an empty hand.
Stray 		
* 80% of skeletons spawned under the sky in ice plains, ice mountains and ice plains spikes biomes will be strays.	
*, plus per equipment piece (when killed by a player or tamed wolf)
Spawned Equipment	
* Strays behave like a normal skeleton.
* Strays shoot arrows of (0:30) at the target.
=== Changed ===
All mobs		
* Mobs now can shoot while in a boat.
Enderman		
* Endermen now can spawn in the Nether.
* Endermen now can pick up netherrack.
Skeleton		
* Burning skeletons now have a 50% chance of shooting flaming arrows.
== Blocks ==
=== New ===
Bone Block 		
* Can be found in the part of fossils.	Pickaxe	
* Can be crafted back to 9 bone meal.
Magma Block 		
* Can be generated in the Nether between Y=23 and Y=37.	Pickaxe	
* Mobs and players take damage every second while standing on the magma blocks.
** If sneaking, wearing Frost Walker-enchanted armor, or under the effect, they will not take damage.
* Magma blocks will remove the water block on top randomly.
Nether Wart Block			Any 	
* Can be used as a decorative block.
* Cannot be crafted back to nether wart.
Red Nether Bricks			Pickaxe	
* Can be used as a decorative block.
Structure Void 		
* Obtainable through commands.	N/A 	
* A technical block used for saving and loading structures.
=== Changed ===
Dispenser 		
* Dispensers can now equip shields onto players.
Hardened Clay		
* Stained clays have been renamed from "<Color> Stained Clay" to "<Color> Hardened Clay".
== Items ==
=== Changed ===
Chorus Fruit and Ender Pearl		
* They now can teleport riders from their mounts.
Firework Rocket 		
* Firework rocket recipe now produces three rockets rather than only one.
Fishing Rod 		
* Fishing rod now can pull items to the player.
== Biomes ==
=== Changed ===
Plains and Sunflower Plains 		
* They now have a few oak trees.
Ice Plains, Ice Mountains and Ice Plains Spikes		
* They now don't spawn passive mobs other than rabbits and polar bears.
Mesa 		
* Hardened clay no longer generate more than 15 blocks deep, if the mesa is more than 15 blocks above sea level.
* In addition to the normal 2 blobs of gold ore below Y=32, it also attempts to generate 20 blobs between Y=32 and Y=79.
== Structures ==
=== New ===
Name	Image	Generation 	Consists of	Description
 	 	Fossils generate in the underground in deserts, swamplands and their M and hills variants.	
* 
* 	
* Fossils look like the skulls and spines of giant extinct creatures.
 	 	Mineshaft generated in mesa will be a mesa mineshaft. 	
* 
* 
* 
* 
* 
* 
* 
*	
* The midpoint of mesa mineshaft is near sea level.
* Uses dark oak wood for wooden structures.
 	 	Villages made from spruce wood can generate in taiga biomes. 	
* 
* 
* 
* 
* 
*	
* Similar to other village types, but made from different materials.
 	 	Villages have a small chance of generating as a zombie village. 	
* 
* 
* 
* 
* 
*	
* All generated villagers are instead zombie villagers. These zombie villagers don't despawn.
* There are no doors or torches in the village.
=== Changed ===
Mineshaft 		
* Features generate differently if above ground.
** Cave spider spawners no longer generate if sky light is 8 or more.
** Wooden structures no longer generate if above is air or sky light is 8 or more.
** Rails in corridors are more complete if sky light is below 8.
Village 		
* Villages are no longer restricted by biome boundaries, meaning that a village that starts in a valid biome can now spread into an adjacent invalid biome.
* Villages now generate in taigas (but not variants).
* Village structures now made with the wood type in that biome.
* In savanna villages, acacia log is used instead of cobblestone.
* Blacksmiths and churches now always use cobblestone.
* Paths are now made with different material depending on the existing terrain.
** If replacing grass blocks, the path is made from grass path.
** If replacing water or lava, the path is made from planks.
*** In desert villages, smooth sandstone is used instead of planks.
** If replacing sand, sandstone, or red sandstone the path is gravel on top of cobblestone.
*** In desert villages, sandstone is used instead of gravel and cobblestone.
Huge mushroom		
* Huge mushrooms now have a chance of generating twice as tall as normal.
Cave 		
* No longer turn adjacent sand blocks in the ceiling into sandstone when generating.
End portal 		
* Now replace all blocks inside the portal frame ring when activating.
== Others ==
=== New ===
Auto-jump	
* Automatically makes the player jump when running towards a one-block-tall obstacle.
es:Guías de Java Edition/Frostburn Update
ja:ガイド/Java Edition/フロストバーン・アップデート
ru:Руководства по Java Edition/Frostburn Update
zh:Java版指南/霜炙更新