the Mouth of the Abyss
The highest-ranked Kog'Maw one-tricks, with their rank, win rate and games played in Patch 16.17.1.
Belched forth from a rotting Void incursion deep in the wastelands of Icathia, Kog'Maw is an inquisitive yet putrid creature with a caustic, gaping mouth. This particular Void-spawn needs to gnaw and drool on anything within reach to truly understand it...