Fun Game Mode Experiences

Obviously everyone loves the different game modes in league. Its part of what makes this game and community so fun. So in honor of April 1st Draven/URF day and Rotating Game Modes I want everyone to tell us about some of their favorite moments in one of the game modes. Whether it is Doom Bots, URF, Hexakill, Legend of the Poro King, One for All, Ascension, or even Nemisis (oh who am i kidding did anyone even like this one). I want to hear you stories, your experiences, and your fun.

Also what is your favorite mode? Let me know.