Anvil

Anvils are interactive blocks that were added in Update 0.12.1. They allow the player to Enchant, rename or repair items, such as weapons, tools and books.

Crafting

 * 3 Blocks of Iron + 4 Iron Ingots =1 Anvil

Use
Anvils are used to enchant items using Enchanted Books. They also allow the player to rename and repair items, and can also be used to combine enchantments on certain items by using Experience Points.

Degrading
Anvils have a 12% chance of degrading once used, and may break once used enough times, on an average 24 uses. Depending on how degraded they are, when broken, anvils may drop as either a Slightly Damaged Anvil or as a Very Damaged Anvil. But when they go too far, they break and cannot be renewed.

Trivia

 * They produce a 'heavy metal' sound when placed.
 * Anvils obey gravity like Sand, Gravel, and Ignited TNT.
 * When dropped from large heights, an anvil can become damaged, and even break.
 * Anvils can enchant even non-tools, unlike Enchantment Tables.
 * In Creative Mode, It can combine all items, no matter how expensive it is in Survival Mode.
 * Anvils damage players and mobs 2 hearts if they drop on top of player/mob.