Zerg Buildings with an Attack?

I was watching some videos the other day and in a video showcasing the queen, it seemed to me that the Zerg buildings all had an attack.
I could be wrong, but heres the video.
The one called, The Queen.

http://media.pc.ign.com/media/850/850126/vids_3.html

When the Vikings attack it looks and sounds like they are being hit but something similar to what the Spore Colony shot out. They are hovering above the buildings.
Is this possible?
Thoughts?
Incite?

 

That's one of the Queen's abilities in action. I think it works like an AoE spell, where all buildings under it get spores, temporarily. Ask Jon for a more correct answer.

 

GMG you are nearly right!
The Queen used an abbility that cost energy on 1 or some of the buildings, that made them able to attack with golden "flies".

 

Ya it is quite a cool ability.

 

that ability will come in handy actually, considering the queen is the only defensive builder

 

Does anyone know if it stays an effect on the building or if it runs out?

 

it has a time limit, that would be cheating if its permant

 

Well what it should do is have a certain amount of times can it fire. Like it can shoot 15 firefly things or so then it runs out.

 

i was thinking more of time limit

 

I rhink it is limited to a minute, or something like this ammount. That would be also nice, if The ability would last only until the queen stays near those buildings.

 

that would be kinda... off balancing

 

Im confused. So it will stay on the building forever as long as the Queens near it?

 

no, its so far time limited when the queen cast on it

 

Noo.... He was saying it'd be nice if it was like that. The buildings only stay as defense buildings for a minute or so.

 

See i dont think thats a good way to do it. What if they would stay forever but you could only do it to like 5 building. You could also take it off buildings to put it on a new one and when the building is killed you can put it on a new one.

 

well, lets just say that if you had your zerg buildings all around your minerals and you did that to them, then you cant raid more effectively anymore unless you had some firepower.

 

But then you couldnt use it anywhere else. The zerg are open to raid attacks right now anyways so i think it would work.

 

thats what the queen is for... raids should only mostly happen in the beginning where they don't have a lot of minerals

 

Well you'd still ned energy to do it, or it would be very OP. Not a bad idea, though.

 

well, the idea is to make it harder, not impossible, seeing that the buildings will be harder to kill