It's been a thing since S3 world's. Basically it just makes Kog really hard to kill. He already does a ton of damage from Bio-Arcane Barrage, so it's more valuable to have the extra health and mobility. Shiv/PD deal more damage but Triforce keeps you alive so you can keep hitting things and survive dives.
Kog'Maw works well with all of the stats. It builds from a Zeal but also adds the Sheen passive (which works well with his ultimate) and the movement speed and health from Phage to make up for lacking mobility.
However, it's only a good pick when you and/or your team is winning cause it's that expensive.
However, it's only a good pick when you and/or your team is winning cause it's that expensive.
SKT vs. SHC (CandyPanda)