Sleep vines?

[Dekent]

Could anyone explain to me exactally how sleep vines work? They do 33 'stun' damage..what the hell is that? ;p

Also, for weapons that have more then 1 attack, are they forced to hit the same unit, or can 1 attack hit 3 seperate units. Same for units with more then one weapon, are they forced to use both weapons on the same target? This is something I've always wondered about but never cared enough to find out in the Dom universe. (until I wanted to try out carrion forest theme heh)