I've never ran a magic user from 0 to 18, nor had anyone in any of my campaigns done so. I was unfamiliar how effective Meteor Swarm was until I played a game with a pre-generated, 21st level magic user. The DM was an old school wargamer. He loved the Chainmail rules and WRG. He intended to start the game with a prison break, but as a twist, let us play out our capture. Our party encountered what could only be described as hoplite phalanx, a seemingly overwhelming force that would easily capture our tiny party.
As the DM described the situation, I read the description for Meteor Swarm. I asked if they were in bow range. The DM advised that they were not. he smugly informed me it didn't matter because magic users use darts, not bows. As they got closer, the party loosed arrows. A few arrows hardly did anything, there were several hundred guys. At 180 yard... yards(!), I cast Meteor Swarm.
|Meteor Swarm vs. Phalanx|
What happened next was even more horrifying. I cast it AGAIN! The DM walked away from the table. Even assuming the phalanx scattered to the winds, I was killing survivors by the dozens. The few that ran towards the party were running into a hail of arrows and in the very next round, I would be casting a fireball.
As it stood, the DM decided to allow this insanity to stand. The second, third and forth phalanx captured the party. Funny how they snuck up on us. My character was put to the sword. I played a 5th level thief for the remainder of the session.
If there is a smart lord or lady of the lands, they would be wise to kill any and all magic users before 18th level.