Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
I chose to do this build because i love playing Kog'Maw and i wanted to show i play Kog'Maw
I always pick the Dagger first because i want to be able to farm faster in the beggining of the game, and i rather not recall until i have 1500-2000 Gold, so i can buy both the Berserker Greaves and the Recurve Bow at one recall.
To have Exhaust and Ghost is the best thing you can have, since Kog'Maw dont have the best flee skills, you need Ghost. I pick the Exhaust to be able to kill them at the early game, since Kog'Maw is the more dominant in early games.
To play Kog'Maw Succesfully you must use your Bio-Arcanic Barrage every single time you're in a fight, it's Kog'Maws best skill after Living Artillery, so i want to max this skill first of all. After that it comes Caustic Spittle, which passive increases Attack Speed, and thats what thsi build is for. And the Void Ooze will come, i dont think it is as important as the other 2 skills so i like to max it last, but it isn't important how you put your skills, you can choose it urself. If the enemy is trying to flee, just use your Living Artillery, they will try to run away as fast as possible, but if they run in to it they will be damaged, so it is a bit obstacle for them.
The runes i chose is mostly for his Normal attacks, and i think that Kog'Maw is much better with AS than AP and the CDR runes are mostly for his Bio-Arcanic Barrage.
Farming, the most important part for Kog'Maw. Try to last hit the creeps as much as possible, you want to make as much money as possible to be the one who your team rely on.
In teamfights try to always spam your Bio-Arcanic Barrage with your Living Artillery, and autoattack and kick their butt, and remember to always be in the back since youre a pretty big target since your squishy at the beggining.