WarioMan, you just BLEW MY MIND

The way I play, this is one of the best common lands out there: R or U with the only penalty being that it comes in tapped (I don't like paying life, but the 4 max/deck means that I'd throw in some shocklands anyway), I'm trying to get my hands on a Maze's End for my 5-color deck, and my Izzet deck loves this card. Definitely one of the best common lands (in some ways even better than Izzet Boilerworks)