RigaMortus said:
If you have to choose the square that you attack into, then why does it say you have to "roll randomly to see whether the selected target is real or a figment"? Shouldn't it be one or the other? Not both? That makes no sense.
Nope, but it does make it much simpler. The FAQ suggested
treating it like they all shared the same square. In my mind, each figment is in its own square, the caster is always shifting places with each figment and the enemy doesn't know what square to attack. Now, this doesn't work very well for a few reasons.
First, the caster isn't allowed that many 5' steps in a round and therefore the enemy would be able to deduce more than they should.
Second, if each was given its own square and the caster could constantly be switching places, it could change who was targetable with his spells since from one square the enemy might have full cover, while from another, the enemy would only have partial cover.
Third, it would limit the caster to only be able to cast the spell when there was enough room for each figment to have its own square.
Therefore, I think of them as each having their own square (which makes rolling to see if you attacked the caster or a figment make sense), but I treat the caster and the figments as only occupying one square because it just becomes easier. I realize that it doesn't make sense to have them occupy the same square, otherwise it would always be beneficial for the person to close their eyes on the attack and have a 1 in 2 chance of hitting rather than a 1 in X chance. But for the other reasons I mentioned, that is the way I treat it.
Edit: When making an attack against someone with mirror image, instead of declaring that you attack a certain square, the person declares that they try to attack the caster, and we ignore what square they might actually be swinging in. It also makes it easier if you use miniatures. Not many people have several duplicates of the same miniature that they want to put on the board.
Of course, by the wording of the spell in the rules, you can set out several more miniatures and attack certain squares while keeping track of where the real caster is (instead of rolling randomly). I just choose not to do that because it would make the spell so hard to play. It is much easier to just imagine what it looks like in my mind, and forget about representing it accurately on the battlemat or grid.