March 28, 2012 Patch

{{Patch layout
 * source = http://store.steampowered.com/news/7662
 * source-title = Dota 2 Update - March 28, 2012


 * before = March 23, 2012 Patch
 * after = April 12, 2012 Patch


 * notes =

GAMEPLAY

 * Added Lone Druid!
 * Fixed small bug in the timing of sequential attacks.
 * Lifestealer
 * Fixed being unable to Infest Mud Golems.
 * Weaver
 * Fixed Time Lapse interaction with Aegis.
 * Ancient Apparition
 * Fixed a bug where Ice Blast could get stuck on the map.
 * Added Lycan in Captain's Mode

UI

 * The top bar game timer no longer is reset when a game ends.
 * Heroes in top bar now draw grayscale when dead.
 * The buyback cooldown time now appears in the gold tooltip.
 * The buyback cooldown now appears in the form minutes:seconds.

VISUALS

 * Added a buff/debuff effect for Razor's Static Link.
 * Added effect for fountain heal.
 * Fixed heroes drawing parts of their models in portraits when sheeped, hexxed, etc.
 * Updated the effects for Shadow Demon's Shadow Poison.
 * Decreased darkness of fogged areas

BOTS
}}
 * Fixed bots being too aggressive about destroying enemy items.
 * Fixed bug where bots would pick up items like Rapier or Aegis without giving humans a chance at them.
 * After all humans have picked heroes, the remaining bots will now immediately pick their heroes.
 * Fixed bug where bots would try to farm the same neutral camp that a human was farming.
 * Added support for bots buying and placing Observer Wards:
 * The more of a support a hero is, the more likely they are to buy wards.
 * If they have a human teammate, they will not purchase enough wards to fully deplete the store.
 * They will ward the runes, their jungle, and sometimes the enemy jungle (depending on how pushed the lanes are).
 * They won't go to locations to place wards if they think it's too dangerous.
 * Fixed bug that would sometimes prevent bots from defending their top/bottom lanes when the tier 3 towers/racks are gone.
 * Fixed bug where if the incoming threat was small, no one would ever be a selected to defend (typically resulting in no defensive response to creeps).