KarinsDad said:
It is a neon sign that shouts "I AM A PROTECTED ARCANE SPELL CASTER, COME ATTACK ME FIRST" and that is exactly what a DM should do. With every gun in his NPC barrel.
I don't think that washes... what about these neon signs:
I AM AN
UNPROTECTED ARCANE SPELLCASTER, COME ATTACK ME BEFORE I BECOME PROTECTED
I AM AN ARCANE SPELLCASTER WHOSE PROTECTIONS YOU CANNOT PERCIEVE, BETTER ATTACK ME SOON SO YOU KNOW HOW TO DEAL WITH THEM
I AM A VISIBLE ARCANE SPELLCASTER, ATTACK ME BEFORE I DISAPPEAR
I HAVE d4 HIT DICE, I DIE QUICKLY
As soon as enemies know he's an arcane caster, there's nothing that a wizard can do to
not be the primary target, so what's the difference twixt having mirror image up and not? The only question remaining is "at what point do the enemies know the arcanist is the arcanist"? And that's a metagame question that's very much campaign and DM dependent, so there's no "right" answer to it.
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Re: Magic Missiles and MI, from a non-rules based prospective
Mirror Image is useful to give the arcanist one to three rounds of relative protection from melee and ranged attacks. If Mirror Image forces an enemy mage to cast a 1st level spell to dispel up to 5 images, while only possibly dealing 1d4+1 points of damage to the acutal caster, then Mirror Image has been successful, and it's still a useful spell.
Physical attacks can target the images, so Magic Missiles can too. And if the RAW say otherwise, that's silly, and I fart in that direction while I busy myself with House Ruling it.
