mystics aren't easy to use just off the bat. Takes a while to learn them, but they are quite effective in pk/pvp. .. personally, i'd advice u to go mystic, since you've played archer for so long, you might like the change of pace xD
Mystic's Are fun and Enjoyable to play. But one problem with them T_T is hauting Quests and getting all the pets and also You gotta heal real Extremely fast cause ur pet die to dam fast >.<
Tru dat.