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Message: <blockquote data-quote="Tessarael" data-source="post: 9867272" data-attributes="member: 12909">For the D&D 2014 version, if you and the images have the same AC, there's a 25% chance you get hit rather than an image on the first hit; 35% on the second hit; and 50% on the third hit. This amounts to a 24.4% chance that you don't get hit on the first three attacks that strike your AC successfully.For the D&D 2024 version of Mirror Image, there's a 3.7% chance you get hit rather than an image on the first hit; 11.1% on the second hit; and 33.3% on the third hit. This amounts to a 57.1% chance that you don't get hit on the first three attacks that strike your AC successfully.So, D&D 2024 significantly improved Mirror Image in that regard as well, ignoring that your images get higher AC too with D&D 2024. The D&D 2024 version is okay if your AC is in a range where the opponents have a decent chance of hitting you, particularly when your opponents have multiple attacks, but it makes you extremely difficult to hit when you are high AC.Another big advantage of Mirror Image is that it lasts 1 minute and doesn't require concentration. Mirror Image seems significantly better than Blur for a high AC spell caster, as Blur lasts 1 minute with concentration, and just imposes disadvantage on attacks against you. Also worth considering that many combats only last 3 to 4 rounds.It makes me really wonder if they did the math for the D&D 2024 changes to Mirror Image. I suspect not, or that the change was allowed due to the simpler mechanics for it.As a DM, I'd be tempted to house rule to get rid of the Mirror Image spell, but change the Blur spell to not require concentration, as that would streamline combat better. I don't like the mechanics for Mirror Image that require rolling an additional d20 or d6s, and/or having to strike the images AC that differs from yours. I also don't see the need for two 2nd level illusion spells, Blur and Mirror Image, that are somewhat similar defensive spells reducing that chance that you get hit, and which many people will struggle to evaluate as to their relative effectiveness.A possible simplified version of Mirror Image is that it simply causes all incoming attacks to miss 50% of the time for say 3 rounds, unless the attacker has True Sight, Blindsight, Tremorsense, or similar to pinpoint your location. And higher level spell slots could increase the duration by 2 rounds per spell slot level.</blockquote>

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