Originally Posted by Google
What you are seeing is called a declined particle, usually there is supposed to be fire that comes out of sunfire cape but you get blue box's because the particles are currently being updated or your game files are corrupt and need a repair. I suggest you open LoL and clicking repair this will organize all the files and make sure they are put into the right place and replace corrupt/missing files.
tl;dr run the repair tool that should fix your problem.
-Best of luck, Google
Thank you very much. It was really weird for me, seeing that kind of thing made me paranoid. Maybe I just overreacted.
Good to see nice people answering me, normally impolite players answer, and I get kinda sad for being unable to react. Like when I used played Ragnarok, there's was no such thing as education and teamwork. Great community that LoL has.