The Point Defense Drone will shoot down missile attacks from the enemy within it's range. It will work against the following:
- Marauder, Viking, Banshee, Battlecruiser, Thor, Missile Turret
- Stalker, Phoenix, Photon Cannon
- Queen, Mutalisk, Corruptor, Hydralisk, Spore Crawler.
The Auto-Turret ability will create a stationary gunner that will last for 180 game time. These can be great when added into a battle to deal extra damage or absorb some. Also can be laid down behind enemy mineral lines to kill workers. Alone against enemies obviously aren't much of a threat, but if enough are made and laid down, you have an expendable army that can be very scary.
Their last ability is the Seeker Missile. There isn't much out there that is as terrifying as the Seeker-Missile slowly inching it's way towards your large ball of units. It does 100 damage and has a sizable splash radius.
Heres some game examples with Ravens being used.