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Changed how the spell is overridden to reduce risk of conflicts with other mods or future patches
Version 2.0.1
Fixed Mirror Image cast outside of combat being unable to redirect attacks during part of the first turn of combat
Version 2.0
Reimplemented for release version of the game, now much more accurate
More concise tooltips
Version 1.0
Initial release
BG3's version of the Mirror Image spell doesn't match the D&D rules. This mod fixes that.
BG3
Create 3 illusory duplicates of yourself that distract attackers. Each duplicate increases your Armour Class by 3. Whenever you successfully evade an attack, one of the duplicates disappears.
D&D 5e
Three illusory duplicates of yourself appear in your space. Until the spell ends, the duplicates move with you and mimic your actions, shifting position so it's impossible to track which image is real. You can use your action to dismiss the illusory duplicates.
Each time a creature targets you with an attack during the spell's duration, roll a d20 to determine whether the attack instead targets one of your duplicates.
If you have three duplicates, you must roll a 6 or higher to change the attack's target to a duplicate. With two duplicates, you must roll an 8 or higher. With one duplicate, you must roll an 11 or higher.
A duplicate's AC equals 10 + your Dexterity modifier. If an attack hits a duplicate, the duplicate is destroyed. A duplicate can be destroyed only by an attack that hits it. It ignores all other damage and effects. The spell ends when all three duplicates are destroyed.
A creature is unaffected by this spell if it can't see, if it relies on senses other than sight, such as blindsight, or if it can perceive illusions as false, as with truesight.
This Mod The only difference* between this mod's version and D&D 5e's is that when an attack gets redirected to a duplicate, that counts as the attack missing you, not attacking another target. This has implications for the Sentinel feat and the Riposte manoeuvre.
Attacks against duplicates will be reported as critical misses.
The spell is implemented with the help of a reaction, which must be left enabled and with "ask" disabled. This is just an implementation detail from the game listing its internal "interrupt" system as reactions in the UI even when they're not. It won't actually use up your Reaction.
*Technically there's one more difference - you don't get the option of dismissing the duplicates as an action. That's just useless.
