Java Edition 13w09b

13w09b is the twelfth snapshot for 1.5, and was released to fix some of the bugs and crashes in the 13w09a snapshot. It was also the first version to include Minecraft Realms.

Additions

 * Added an /effect command
 * Command: /effect [seconds] [amplifier]
 * Maximum number of seconds are 1,000,000
 * Amplifier increases level of the chosen status effect
 * Maximum number for [amplifier] is 4
 * Added Minecraft Realms
 * Only added to few randomly chosen players
 * Exactly 100 players were chosen
 * Feature is accessed through button in the Menu screen

Fixes
20 bugs fixed

From released versions before 1.5
 * – crowdin.net: Entry entity.WitherBoss.name is missing – German translation is "Withern"
 * – Self-Powered Redstone Lamp / Breaking a repeater with a piston pointing at a block won't stop the circuit
 * – Potatoes are not affected by the Fortune enchantment
 * – Items with NBT data do not stack correctly due to serialization
 * – Named tools/armor disappearing from inventory
 * – Infinite Duriation Bug
 * – /clear with command blocks not working with armor that has been worn with custom damage values.

From the 1.5 snapshots
 * – Cannot Drop Items in Creative Mode
 * – Texturepacks no longer work
 * – Rail Duplication glitch
 * – World crashes after a few seconds
 * – blocks keep the redstone state when breaking a comparator that powers that block
 * – Pistons can't destroy comparators
 * – Crash with 512x texture pack
 * – Fortune doesn't affect the drop rate of apples and saplings
 * – "Pick Block" on certain items then switching to survival creates infinite or ghost items
 * – When removing "Ghost Items" from the inventory, the number may be negative or zero

From the previous snapshot
 * – GUI text is messed up when changing textures / Block & item textures replaced by letters or other textures
 * – Pressing Single or Multiplayer Button crashes the game
 * – Mining Fatigue broken