I don't remember Teemo shrooms being this powerful before.
Yesterday and today I got to play against a Teemo and just could not teamfight. Our frontline goes in and Teemo just throws shrooms at him like mad, which activate once he's passed slowing and damaging the entire rest of the team. Then the enemy just walks backwards and focuses down our frontline who is alone. Like holy crap I thought Teemo was only good at stalling lanes and splitpushing. He zones entire teams now! Maybe it's just all the Teemo mains coming back to try out the new infinite bouncing mechanic.