May 21, 2013 Patch

{{Patch layout
 * source = http://www.dota2.com/news/updates/10660/
 * source-title = Dota 2 Update - May 21st, 2013
 * before = May 20, 2013 Patch
 * after =


 * notes =

GAMEPLAY

 * Fixed giving vision to Elder Titan while dead.
 * Fixed being placed slightly too far forward.
 * Fixed not getting upgraded on the if it was already in the air.
 * Fixed sometimes not getting applied before 's damage.
 * : Fixed stack getting dispelled with Magic Immunity.
 * Fixed sometimes not getting applied before 's damage.
 * : Fixed stack getting dispelled with Magic Immunity.

PERFORMANCE

 * Added vsync support to windowed modes.
 * Reduced memory fragmentation.

COMMUNITY

 * There are now 6 broadcaster channels.
 * Added map ping throttling for communication banned players.

INTERNATIONAL COMPENDIUM

 * Now highlights Compendiums that are gifts from other players.
 * Updated with new stretch goals.
 * Prize pool now displays how much the Compendium owner has contributed.
 * Fixed an issue where the Smeevil Courier view counter was not updating correctly.

DOTA ECONOMY

 * Particles on unusual couriers work again.
 * Strange items that count things other than kills work again.

Cosmetics
}}
 * Added various HUD Skins
 * Deepest Depths
 * Empowered
 * Tempest Wing
 * Frozen Touch
 * Malice
 * Nature
 * Driftwood
 * Gear Tooth
 * Added Pyrion Flax Announcer Pack