hello, this is my first build so I'm not really sure what to write. The way to use this build is to team up in a lane with another ranged champion and late game when the build is up to about frozen mallet you will be able to get alot of kills thanks to the attack speed which will be around 2.5 attacks a second.

These runes will give you attack speed which is the key to this build and extra health which is key because Kog is quite squishy.

Start with dagger and a health potion which will help you to stay in lane for longer.Then the Beserkers Greaves to give movement speed and attack speed. this is very helpfull. Next recurve bow for AS and then Madreds bloodrazor, this helps as you will be dealing 4% of their health each hit and dealing about 2.5 hits a second so aganst tanks this is brilliant. Next another recurve bow and then sword of the divine. The extra damage every 4 hits helps alot and the unique ability on it helps alot. next phage for health and then frozen mallet for health, damage and the slowing effect it has.By now you will be hitting alot and be a pain to kill, depending on your team and the other team you should be able to push mid and win about now. the after that malady and void staff for AS and AP

Thats just what I do, start it the same and then change it however you want.

Flash is for getting away and catching up as you don't have many defensive abilities.Exhaust to weaken their armor and slow them when they try to run.

Kog'Maw is a brilliant champion early and late game. He can 1v1 tanks if they aren't heavy hitters and can kill any champion quite quickly.As long as you team up with another teammate you will e able to do some severe damage.