December 22, 2015 Patch

{{Patch layout
 * sort = 2015-12-22
 * source = http://store.steampowered.com/news/19831/
 * source-title = Dota 2 Update - December 22nd 2015
 * before = December 21, 2015 Patch
 * after = December 23, 2015 Patch
 * notes =
 * Fixed {{Ability ID|Flux|Arc Warden}} interaction when near Spell Immune allies.
 * Improved AFK detection for {{Hero ID|Techies}}.
 * Adjusted {{faction|Dire}} Secret Shop Camp spawn box.
 * Fixed Ancient Black Dragon's Fireball not having a Legacy Key.
 * Break status now disables the effect of {{Hero ID|Drow Ranger}}'s {{Item ID|Aghanim's Scepter}} upgraded {{Ability ID|Marksmanship|Drow Ranger}}.
 * Fixed {{Item ID|Black King Bar}} charges not carrying over to {{Ability ID|Tempest Double|Arc Warden}} properly (was granting full duration always).
 * Fixed {{Ability ID|Infernal Blade|Doom}} having 128 cast range rather than {{Hero ID|Doom}}'s 150 attack range.
 * {{Hero ID|Arc Warden}}'s Clone now receives a clone of shareable items not owned by {{Hero ID|Arc Warden}}. These include {{Item ID|Bottle}}, {{Item ID|Gem of True Sight}}, {{Item ID|Ring of Regen}}, {{Item ID|Ring of Health}}, {{Item ID|Void Stone}} and {{Item ID|Perseverance}}.
 * {{Hero ID|Ember Spirit}}'s {{Ability ID|Fire Remnant|Ember Spirit}}s now render while in Fog of War.
 * Fixed {{Hero ID|Arc Warden}} not getting XP when {{Ability ID|Tempest Double|Arc Warden}} uses {{Item ID|Hand of Midas}}.
 * Fixed an interaction between {{Hero ID|Necrophos}}'s {{Ability ID|Reaper's Scythe|Necrophos}} and {{Hero ID|Arc Warden}}'s Clone.
 * {{Hero ID|Lone Druid}}'s Spirit Bear now respects the auto-select summoned units option when respawning.
 * Fixed the neutral forest troll high priest playing his heal animation after he was dead.
 * Fixed a bug where the store page was showing an empty pedestal for victory prediction charms.
 * Fixed a bug where the store page incorrectly had a Demo Mode button for items that cannot be demoed.
 * Fixed a bug where the Customize screen was not showing the appropriate icons for alternate styles of items.
 * Fixed a bug where sometimes the opaque parts of models wouldn't render in the UI or portraits.
 * Fixed a bug where the Demo button didn't appear on the loadout screens of any global items.

Added several new Russian voices: (note that {{Hero ID|Zeus}} and {{Hero ID|Arc Warden}} were included with the Balance of Power Update).
 * {{Hero ID|Bounty Hunter}}
 * {{Hero ID|Crystal Maiden}}
 * {{Hero ID|Dazzle}}
 * {{Hero ID|Disruptor}}
 * {{Hero ID|Lich}}
 * {{Hero ID|Lina}}
 * Lina Announcer
 * {{Hero ID|Mirana}}
 * {{Hero ID|Phantom Assassin}}
 * {{Hero ID|Silencer}}
 * {{Hero ID|Slark}}
 * {{Hero ID|Spirit Breaker}}
 * {{Hero ID|Sven}}
 * {{Hero ID|Tusk}}
 * Tusk Announcer
 * {{Hero ID|Windranger}}
 * {{Hero ID|Wraith King}}

Text and voice languages can be mixed to your preference. To select a new voice language, open steam and right-click on Dota 2. From here, select Properties, then the Language tab, and choose your preferred voice language. Steam will then download the new language.
 * changes =

Tournament items
}}
 * Dota Pit League Season 4 ticket is no longer free to spectate.
 * Dota Pit League Season 4 ticket's description has been updated.