Murky vs Zeratul
Murky can lane against Zeratul. Murky should get Zeratul to chase him then drop a pufferfish while he is out of position. Murky will die but eventually will force Zeratul to retreat.
When Mruky gets Fish Tank Zertaul becomes the hunted. Even if Murky does not get the kill his slows will prevent him from escaping from your team.