10 Magic: The Gathering Cards Too Powerful For Their Own Good
9. Serra Ascendant
Serra Ascendant is a card that is especially dangerous in formats like Commander, where you start with a life total exceeding 30. This because its ability gives him a whopping +5/+5 if his controller has over 30 life.
Of course, in Commander, players start with a life total of 40, so having this card in your deck means you could potentially play a 6/6 creature with flying and lifelink on turn one since Serra Ascendant can be cast for just one white mana.
Generally speaking, most creatures that cost one mana are 1/1's, so having Serra Ascendant in play early can potentially give you a massive advantage right out of the gate. Moreover, this flying monk also has lifelink, which means you'll gain life equal to the damage he inflicts.
Having a creature that potentially allows you to blast your opponent for six damage on turn two, and gain a good chunk of life in the process, is never a bad thing.