This is an assassin side lane build for broodmother.
You put two levels into incapacitating bite early so that you get the slow
Also buy the dagon early and upgrade it all the way, all the other items are secondary to this
Put your webs in the jungle at the edge of the map. You can move through trees when in your web so you can retreat into the jungle out of range of spells and attacks if necessary.
Bite retreating heroes to slow them then use dagon and spawn spiderlings to finish them of