Continuing my streak of launching discussions based on commentors, let's discuss what makes something broken. I've heard a few people call this guy busted, and it's true he (She?) seems pretty nuts when you just read her text box. I mean, she does a ton of stuff. But there's a few major weaknesses that keep this ole girl in line, the most glaring is a mana cost of 15. Which means if you don't build your deck around ramping, hardcasting the card (and thus gaining the extra turn) would likely happen around turn 18 or so, by then any competent opponent would have cleaned your clock.
Ok, well what about cards that put her directly into play? If my opponent cheats it in they don't get the extra turn, but it's got protection from ALL COLORS! Now back up, does it? In reality, it has protection from colored spells, which means that the 2 mana Journey to Nowhere gets rid of her right away, making sure she won't come back for quite some time.
Now, does that make this particular tentacled monstrosity from beyond time a bad card? No, I love her I even have a deck built around her, but that deck rarely wins because I played her, generally it's because my little dudes with huge cost effects took the game.
Of course, not everyone here plays magic so let's have a general discussion shall we? What makes something in any game "Broken"? To me it's a single object or strategy within the game with no effective counter outside of it's self, though it could mean something else to you guys. So let me know what defines broken to you, or give me examples of broken things in any game. The more horrendously busted the better!