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MarkVIIIMarc
2020-06-15, 09:36 AM
Am I correct in assuming the victim of a Modify Memory spell knows a spell has been cast upon them but does not know what has been changed as they were incapacitated?

Would it be reasonable for a Wizard or someone familiar with the spell know by hearing the verbal components and seeing the somantic that Modify memory was cast on them? Again they'd be unsure of what memory was changed, I assume?

Is this combo legit?

10:00 am, Cast Modify Memory on Bob. Change his memory of who won the big game.

10:05 am, Cast Modify Memory on Bob. Change his memory of the last 10 minutes to not include any spells being cast on him.

Modify Memory Sources:PHB.261SRD.166
5th-level enchantment
Casting Time: 1 action
Range: 30 feet
Components: V, S
Duration: Concentration, up to 1 minute
You attempt to reshape another creature’s memories. One creature that you can see must make a Wisdom saving throw. If you are fighting the creature, it has advantage on the saving throw. On a failed save, the target becomes charmed by you for the duration. The charmed target is incapacitated and unaware of its surroundings, though it can still hear you. If it takes any damage or is targeted by another spell, this spell ends, and none of the target’s memories are modified.
While this charm lasts, you can affect the target’s memory of an event that it experienced within the last 24 hours and that lasted no more than 10 minutes. You can permanently eliminate all memory of the event, allow the target to recall the event with perfect clarity and exacting detail, change its memory of the details of the event, or create a memory of some other event.
You must speak to the target to describe how its memories are affected, and it must be able to understand your language for the modified memories to take root. Its mind fills in any gaps in the details of your description. If the spell ends before you have finished describing the modified memories, the creature’s memory isn’t altered. Otherwise, the modified memories take hold when the spell ends.
A modified memory doesn’t necessarily affect how a creature behaves, particularly if the memory contradicts the creature’s natural inclinations, alignment, or beliefs. An illogical modified memory, such as implanting a memory of how much the creature enjoyed dousing itself in acid, is dismissed, perhaps as a bad dream. The DM might deem a modified memory too nonsensical to affect a creature in a significant manner.
A Remove Curse or Greater Restoration spell cast on the target restores the creature’s true memory.

At Higher Levels. If you cast this spell using a spell slot of 6th level or higher, you can alter the target’s memories of an event that took place up to 7 days ago (6th level), 30 days ago (7th level), 1 year ago (8th level), or any time in the creature’s past (9th level).

prabe
2020-06-15, 09:51 AM
Am I correct in assuming the victim of a Modify Memory spell knows a spell has been cast upon them but does not know what has been changed as they were incapacitated?

If they were able to see/hear the caster, probably. It's plausible they observed the casting but didn't know the spell was being cast on them.


Would it be reasonable for a Wizard or someone familiar with the spell know by hearing the verbal components and seeing the somantic that Modify memory was cast on them? Again they'd be unsure of what memory was changed, I assume?

It's reasonable. You could use the rules for identifying spells cast from Xanathar's if you wanted the outcome to be in doubt, but that's not a requirement--you could easily say that a wizard (or anyone else) with cranked Arcana recognizes the spell.


Is this combo legit?

10:00 am, Cast Modify Memory on Bob. Change his memory of who won the big game.

10:05 am, Cast Modify Memory on Bob. Change his memory of the last 10 minutes to not include any spells being cast on him.

Seems legit to me, by the rules. Dunno how likely/probable it is, but I don't think that's what you're asking.

ATHATH
2020-06-15, 12:57 PM
I'd recommend casting this on a sleeping and/or drugged target, to remove the need for the second spell (since under your plan, you'll need to be prepared for the possibility of your victim making their save against either or both of the two Modify Memory spells that you plan to cast).