Talk:Kog'Maw/@comment-25532677-20151028233122/@comment-25620056-20151028234401

"We believe that BotRK is his likely first item rush, and that Trinity Force is less optimal now due to his W being less optimal with spell-weaving patterns." -Riot Repertoir

So I think that it is better to rush BOTRK or IE over Trinity Force so that you can benefit more from his W and his ult.