[bq]No question, Twilight has hovered on the edges of some powers that, were she of a less guileless nature, would undoubtedly be very concerning. She definitely strikes me as an "oh, hey, a spell that completely dominates other minds and bends them to my will? This is fascinating stuff to learn about just for the sake of learning!" type.[/bq]
It very would. I honestly think she could have toed the line very easily. She has done morally ambiguous things with magic before (like the Want it Need it Spell or what she did to the Pinkie clones) or has gotten close to doing that (like attempting to use magic to reform Discord against his will).
[bq]And given that she may be one of the most diverse magic users in Equestria, I do sometimes wonder if Celestia’s desire for her to make friends had an additional intent of keeping her from accidentally becoming some kind of world consuming evil.[/bq]
I honestly wouldn't be surprised if it was. Especially if you consider what happened to Luna and Sunset Shimmer. She's seen firsthand what happens to some when magic is misused.
[bq]Honestly? I could see that as the worst one for drawbacks. I mean, not to draw from other mediums, but you think about Lord Voldemort’s desire to live forever and what it cost him to do that, and then imagine a scenario in Equestria where you so love yourself that you would twist that love into sustaining your life even after death, and… that just seems like asking for the worst of all fates. Even if you don’t mess it up. The words "grim mockery" come to mind if you fail, and all the unending torment that goes along with sustaining yourself because yourself is the only thing you ever loved.
I don’t know if Equestria has lich, but if they do, I bet that would be where they come from.
Goodness knows the show has made a play over how emotions affect magic use (thanks, Starlight, for that), so the desire of the person performing magic doesn’t seem like a stretch.
On a related note, I can’t help but think that being brought back in the best way is a pretty rare circumstance, considering that it requires love not used selfishly or out of a refusal to let nature have its way. I’d like to think it would also be the one closest to actual life, whatever that would signify.[/bq]
I agree with you on these points too. I think it would be rare for the dead to come back in a normal manner for those reasons.