The rules are extremeley clear. We've played several times with friends (using the backer preview). Explaining the rules takes about ten minutes. You have four key card types corresponding to story cards you place on the "board.
Attack and Investigate cards add a set (or variable, by dice rolled) number of Hits or Clues to Foe and [mystery] (can't remember the name now) cards. If the set number is collected, you remove the story card.
Overcome and Take Advantage cards work on a 1:1 basis, you play them on Obstacles and Advantage story cards to remove them. Obstacles limit your options or modify your rolls, Advantages allow for additional card draws or give some other bonus.

And that's about it. Every card has a certain range you have to take into consideration, and a cost of Fate Points you have to be careful about, because all players share the FP pool.
The challenge lies in communicating with the other players well enough (without giving the specifics, though new stories we play with giving exact numbers) to remove as many foes and [mysteries] as possible. If the number of Foes remaining on the board remains grear or equal to the [mysteries] solved, you lose the scenario.

It's very simple, and it's more of a board game than it is a card game, and definitely not a CCG.

Don't know about the whole deal, but voodoo dolls are covered 1:1 by thaumaturgy, as above so below etc.

One small addition from me: I ran my first game in DFRGP, three sessions in. I mostly did improv along very general lines, and it exhausted me, despite the fact that FATE is kind of encouraging much more improv than most other systems. I strongly suggest preparing a more detailed gameplan.
Other than that, mechanically this system is fairly simple, most effort has to be put into using spells, but mostly it's done on chargen, so that's not a big problem.

I suppose the more powerful a Nevernever being, the more specific their allowed influence. Erlking may kill only during the Hunt, which happens very rarely. Trolls get to do it anytime, but are limited to bridges and naughty children. I suppose if Toot Toot and his kin were strong or pizza-vated enough, they could kill a mortal anytime. Mab's domain lies fully elsewhere, so's Titania's, therefore they only get to do so much when they appear in physical realm and usually need cat's paws to do their dirty work. Of course everything has exceptions, but that's just how Nevernever beings are, nothing's constant and homogenous.

I first saw the series' name on TvTropes, but always assumed it was something about the city of Dresden and dismissed it as historical fiction, which is something I generally take no interest in. It wasn't until several years later that on an RPG forum I frequented and moderated back then, one of the users made a wizarding game, in its blurb defined as having been inspired by the Dresden Files. That triggered my interest and made me grab the ebooks of Polish (my native tongue) edition of the time. The rest is history.
Although if several of my current group of friends were to answer the OP question, they'd likely say "there was that hairy dude who kept yapping about Dresden Files, so I gave it a try". I regret nothing