There was a game a little while ago on newkirk precinct between goswser and lucifron, where goswser just dismantled a similar style. He went Viper Swarmhost spore crawler infestor. And he took the entire map and just slowly picked off one unit at a time. to be fair this style is VERY VERY almost gamebreakingly strong, but it isn't unbeatable. Day 9 actually did a daily a similar style very recently. He doesn't like it because it's super passive, but it is really strong.