Fire Dragon
Why do I feel like every time the enemy team gets a fire dragon, it's GG. The raw power it adds to an entire team is unbelievably strong, and it works on literally every champion in the game. It lets them take towers faster, it increases %bonus that scale with ratios, it increases damage, it increases heal and shield power.
It's so blatantly universal, and it's such a large bonus at just the first one. If the enemy jungler happens to secure it for their team, they snowball the game and you can't do anything about it. You just have to sit back and let yourself die any time they decide they want to, and then they use the advantage to take your tower in less than 20 seconds.
It's honestly amazing how long this has been like this, yet no changes have been made? Does anyone else things it's just a little too overwhelming?