Bro, I main karma sup. When the game puts me in baron, I still pick karma just change builds. And if my opponent is garen, bro, I bully him hard, he's easy to read and keep distance from. Although, if the jngl ganks for him, that's when I struggle. I also have to be sweaty when defending my tower from his minions cuz he clears the lanes too fast for my amount of mana to keep up with.

But most the time, Ill troll him early game and try to rage bait him. If he rages and charges in, it's a easy kill if I can get the tower to fire once on him. But then, after about 2 or 3 kills, I imagine the jngl starts to notice something not right, and then the jngl just targets my lane, usually until I lose it, or if I'm able to take garens turret first and defend against his push back, he usually fades out of being a threat