Magnus Carlsen would definitely win because Tal's chess skills are quite old. Carlsen's skills include attacking, defending, prophylaxis, sacrificing, among many others. Tal is only experienced in the sacrificing part. It's his strength. I do not intend to insult Tal fans.
MIKHAIL TAL VS MANGUS CARLSEN?

I am sure Magnus would win a match (Tal may overcomplicate a game and catch Carlsen off guard however), unfortunate to say. I love Tal (He is my favorite player infront of Kasparov and Karpov), his style, and I love analyzing his games, but I believe Carlsen's refined and modern understanding of chess would dominate, or atleast overcome Tal's playstyle in the game. Carlsen has been coached by Kasparov among other people that definitely know what they're doing, and has demonstrated great success against Anand recently to earn his title; for this reason I would have to give the edge to Carlsen's finesse over Tal's brutal combinations. It may just be my favor of players that have much more experience, and have introduced tons of insight into the game over a "Prodigy" that would lean my favor into the older generation of players as individuals, but player strength is imbalanced between the ages excluding relative factors.

That is true. Since Tal has beaten Kasparov before, I think at their first fictional confrontation, Carlsen and Tal will draw, because they will be nervous at meeting each other and will not want to get into any complications.

I think Tal has some kind of secret method to see if a sacrifice works out at the end. Maybe it is something about the opponent's pawn structure, the number of your pieces in the vicinity of his opponent's king... etc.

Yeah because since he's dead it'd make for one hell of a hard game to put on. We'd have to kill Magnus in order to get him to the match site, and then who knows if we'd be able to bring him back to life after he wins?!

So, who would win, the magician, or the mozart of chess?
If Magnus can use a flame thrower on a deadly player like Shirov what would he use against his Teacher Tal?! just something to ponder and think over.

I think Tal has some kind of secret method to see if a sacrifice works out at the end. Maybe it is something about the opponent's pawn structure, the number of your pieces in the vicinity of his opponent's king... etc.
It isn't a secret, just visualization and calculated risk. There are also principles such as the three piece rule that states one should have more attackers than they have defenders, but that's one of those principles like opposition you don't need a book to tell you.
Speaking of Tal, here's one of my favorites from him:

Tal may be dead but he reincarnated and is now present on this planet under than name Hikara Nakamura. Wait for the next championship but one to see who wins.

I like for someone who has Tal's playstyle to be born and fight with Carlsen. I believe their match would be so interesting and by the way don't say Tal's playstyle is outdated to win over Carlsen because I am sure enough that Tal could learn the current chess and evolve his way of playing chess with the knowledge of this.
So, who would win, the magician, or the mozart of chess?