I am about to hit LVL 60 in a few days and I am thinking of switching my class just because I am having difficulty forming good lineups to initiate several continuous combos. (I am a F2P by the way)

Can anyone give me a feedback on the other classes? Most specially, the class that you think is a tank, that deals lots of damage (and/or debuffs) and can be in sync in dealing several combos in a round with other ninja characters

thanks in advance!