Wizard: A intelligence caster class that specializes in direct damage spells and area damage. This class gets the most powerful and the most mana efficient of the direct damage line. They are also noted for teleport spells.
Magician: To some extent, a weak wizard that makes up for that defficiency with spells that summon elemental pets to fight mobs. These pets can suck up the damage for the caster and are used as tanks for soloing mages. Magicians can heal and buff these pets. Magicians are also known for their line of summoning spells which can summon a number of useful items that include lightsources, armor, weapons, focus items, pet items, and Mod Rods(hp -> mana). They can also cast damage shields.
Necromancer: A class that specializes in pets, Damage over time spells, and lifetaps. This class uses the spell line of fear, snare and undead slow, and dot spells, and their pets to Fear Kite mobs. This is a very efficient soloing tactic. The mob runs from fear as dots and pet damage are killing it. Necromancers have a number of self buffs. They are also noted for their ability to Twitch (give mana), summon corpses, deal heavy mana efficient direct damage to undead, debuffs and to a lesser extent, cast Dead Man Floating.
Enchanter: This class has a number of different, useful lines of spells that define them. One happens to be Crowd Control or CC through Mez spells. These spells put the mob in a torpor for a time while others kill its companions. The enchanter also has a number of slow and haste spells which are very useful. Enchanters have mana regen spell lines which increase in power as they level, including the famous KEI. They get very good debuffs and can charm mobs to be their pets (for their own summoned animations are kind of crappy) Enchanter have many other spells that deserve mention but I am not going to right now, go to the spell lookup if you want to know.
Mage's dd spells are much weaker and less mana efficient than a wizard's. They also have less of them and they tend to either be magic based with a fire spell mingled in.
Necromancer is better at soloing than a mage because they do not have to have their pets tanking. Fear kiting requires little to no damage being done to yourself. Plus, the mobs just die faster with all the dots and pet damage stacking up. Necromancers have the ability to change their form into an undead creature such as a Spectre or Skeleton (the Lich line of spells) which cause them to regenerate mana at a much faster rate by exchanging it for hp. Combined with lifetap spells, the necromancer can easily keep up his or her mana and does not need to rest.
Edited, Fri Jan 9 10:54:08 2004 by PsyoofXev