Creep Block Bug
Use Wards to block creeps from any part of the map.
Step 1 : purchase a ward
Step 2 : spam place ward action on a creepway ( might be usable on heroes aswell ) ( do not place the ward )
note : vision is not required, you can block blindly infog aswell
This works with no matter what team you are on and you can block creeps from both teams.
Works as of 7/2/2014 patch