Keep in mind that duel tier lists are about who wins the most matchups. Also keep in mind that some matchups are only winnable if played differently from how you would other matchups. **THIS IS MY OPINION AND YOU CAN DISAGREE IF YOU WANT LOL**
Top tier picks, should be banned most if not all the time.
Not entirely sure where to put Lancelot because I have not tested him at all in duel and I haven't really seen much of him in any high level of play.