Magic: The Gathering Arena ruined me.
I wasn't expecting to fall so hard. Yes, MTG is labeled as one of the best card games on the regular but it isn't an easy nut to crack. For starters, it's swimming with terms that aren't always explained on the cards themselves. Next, there are at least half a dozen match types that require different deck combinations. Oh, and countless sets weigh down shelves these days, so knowing where to start is… well, it's a lot. This caused me to bounce off Magic: The Gathering on repeat for a long time.
