Yes, but I can still ask for precedents, especially ones created by the WotC rules team [emoji4]You are creating the item, you get to decide how its effects can be reversed. Make that as easy or hard as you want.
Maybe you're missing more things that casters trivialize, like rest opportunities...Am I missing something or are there several effects in the game that are trivial to remove once the party spellcaster is off the lowest levels?
You. You rule that, once a character knows how the dagger works, the alignment shift is voluntary, and can't be removed so easily.What stops the adventurers from simply casting Remove Curse (or a similar spell; Protection from Good and Evil, Dispel Magic, Greater Restoration perhaps) to reset the adventurer's alignment each time it shifts,
This is 5e: "and you be the DM, 'do what thou wilt' shall be the whole of the RAW.'I'm wondering about what the RAW and RAI is here.
Among the design intents is making magic 'really magical' (trivializing any challenge, if you have the right spell prepped, feels magical to D&Ders).Is the design intent of the rules really to make curses trivially lifted?
Yes: "OK, fine, I'll run this time." When the players signed up to play in your campaign, they implicitly agreed to that (and every other ruling you make until they run screaming into the night).Is there any precedent for ruling something like "sure, you can temporarily lift the alignment change, but if you keep using the dagger, you aren't really fighting the change in personality".
Among the design intents is making magic really magical (trivializing any challenge if you have the right spell prepped, feels magical to D&Ders).
Just because you use the word 'curse' doesn't mean remove curse works on it. Remove curse works on the things that say remove curse gets rid of this curse. You can easily decide that this item, since it requires voluntary action, doesn't respond to a remove curse to revert the alignment change. So long as the players CAN find a way to correct things, and you don't overuse the 'but this curse isn't removed by remove curse' it should be fine.
And, in this specific case, the alignment change should be lasting and not temporary, and the solution to prevent continued alignment changes should be to stop using the dagger, and the solution to correcting the alignment change should be whatever method is used in your game to atone.
I don't disagree, but a lot of folks seemed to over the years...No that's backwards. There's nothing as unmagical and nonwondrous as something cool and atmospheric taken out immediately automatically and trivially by a player character.