StarCraft II/Patch 2.1.9a

Patch 2.1.9
StarCraft II; “Heart of the Swarm”
Release date	April 9, 2015;; 9 years ago
Version	2.1.9
Initial build	34644
Related links
	April 9, 2015;
Patch chronology
← Previous	Next →
Patch 2.1.9	Patch 2.1.10
Additional links
	Patches category, StarCraft II

StarCraft II patch 2.1.9a is an unofficial patch name to catalog the Balance updates after patch 2.1.9.

Zerg

Swarm Host
- Cost modified from 200 Minerals and 100 Vespene to 100 Minerals and 200 Vespene
- Supply cost increased from 3 to 4
- Movement speed increased from 2.25 to 2.95
- Swarm Hosts now require the Burrow research in order to burrow
- Swarm Hosts no longer collide with Locusts
Spawn Locusts – This ability has been reworked
- Auto-cast removed, Spawn Locusts must now be manually cast.
- Spawn Locusts cooldown increased from 25 seconds to 60 seconds
- Casting Spawn Locusts no longer requires a Swarm Host to be burrowed
Locust
- Weapon speed increased from .8 to .6
- Locust duration increased from 15 seconds (+10 seconds with Enduring Locusts) to 25 seconds
Infestation Pit
- Enduring Locusts – This upgrade has been removed
- New upgrade: Flying Locusts - Allows Locusts spawned by Swarm Hosts to fly. Flying Locusts can use Swoop to land and attack
  - Requires Lair
  - Cost is 200 Minerals, 200 Vespene, 160 seconds
  - Allows Locusts spawned by Swarm Hosts to fly. Flying Locusts can use Swoop to land and attack
  - Swoop: Orders the Locust to land at the targeted location, allowing it to attack
Viper
- Blinding Cloud range increased from 10 to 11

Tempest
- Bonus damage versus massive air units decreased from +50 damage to +14 damage.