Earn Maple Story Mesos-Ice
It is a good idea to use ice beam to freeze monsters and get maple story mesos. Even if your cold beam is lower in level.
Equiped with the ability to freeze enemies, you should be ahead of the party to freeze the enemy and earn maple story mesos, even if your cold beam is lower in level. This is to hold the enemy in place as your party pummels them with attacks. However, using ice is not absolutely neccesary if you train on lower level monsters that can be knocked back. For monsters with much higher level than your party, they will not be knocked back and you people will sometimes miss. Freeze them! When you maxed out ice, it is very annoying as your ice spells do heavy damage. I once party with an ice wizard who went around blasting monsters with cold beam and killing them swiftly and earn much maple story mesos. So no point fighting close to your party as you will be snatching most kills. Move on quietly to somewhere else to train unless your party faces a super strong enemy and needs you to freeze it.
Of course you can also buy maple story mesos on goldinstore.com. It is realy an easy way to get maple story mesos.