February 21, 2013 Patch

{{Patch layout
 * source = http://www.dota2.com/news/updates/10006/
 * source-title = Dota 2 Update - February 21st, 2013
 * before = February 14, 2013 Patch
 * after = N/A
 * notes =
 * Added In-game Guides and Hero Builds!
 * Players can now be a member of multiple teams.

GAMEPLAY

 * Fixed backswing behavior on some of 's skills.
 * Fixed being dispelled by Purge/Cyclone/etc.
 * Fixed interrupting channeling spells if the initial duration ends during the channel.
 * Enabled in Captain's Mode tournament version.
 * Fixed not preserving its hotkey when leveled up.

UI

 * Added right click menu to the combat log with "Copy to clipboard" option.
 * Added option to render the Co-Broadcaster's camera. Use dota_minimap_draw_cocaster_camera 0 to disable.
 * Added new right click option to backpack items to equip the entire set the item belongs to.

MISC

 * Added a large number of items to the random loot drop lists.

BOTS

 * Adjusted hero roles of (fewer last hits) and  (more last hits).
 * Made bot more likely to use  in teamfights.
 * Made bot a bit more hesitant about using  when laning.
 * Fixed bots dropping thousands of at the side shops.
 * Practice with Bots difficulty and team settings are now saved.

Undocumented changes
}}
 * Added a new music track for the main menu.
 * Added the Implements of the Tahlin Watch Set, The Commendable Commodore Set, The Third Insight Set, and The Sharpshooter Set.