Originally Posted by
Kris on a Stick
AP Kog (and Marksman Kog, imo, but I haven't played him enough because bot-lane assassin Tristana is so much fun) is much more hurt by the faster meta than his rework (though the numbers were definitely a little on the low side pre-hotfix, and still might be). I've played a few games with the 'traditional' AP Kog build, and it's still capable of outputting obscene amounts of damage when you reach that 2.5 item mark.
The loss of base damage on his R hurts a little, but the combination of Luden's and Liandry's procs are still enough to put some poke damage on full-health targets (Deathfire Touch is a really valuable mastery on any Liandry's user), and then once people start dropping below that half-health mark he's an obscene clean-up threat (think Darius but with 8x the range). He's a great addition to a team that already has some poke or burst that gets people close to or under his execute threshold, and of course taking Baron is always going to be a dicey proposition against him if you end up tanking a little too hard and he blasts you straight back to the fountain from the other side of the wall.
Once the tower changes next patch come through that slow the meta down a bit, I see Kog definitely coming back as a better pick. He was apparently OP on the PBE and got preemptively nerfed (too much) before coming on to live, so there theoretically should exist some space in between there where he's decent.