[ Forgotten To Write Something On Other Post ][ Sry ]
Use something to block entrance that vamp can use sphere of doom to blink in so that you can prevent
[ Sphere Of Doom ] - [ Blink-Length ] ( Assasins ) that vamp may buy to kill your harvesters ... if he does that , ur harvesters will be doomed and it will be like feeding vamps if u do not realise