Collectible and Trading Card Games at Geekfest 2015

I shall tap these two swamps and play Child of Night!

There will be free form al fresco games of Magic: The Gathering running all day in the Sustainability Building. There's no real format; just rock up with a deck, grab an opponent and get your game on.
There will also be Pokemon and YuGiOh! running in the Old Paymaster's Office. Again, no real format, just turn up with your deck and challenge all comers to prove their superiority to you. Heck, if you rock up with Card Fight Vanguard! or something else, you'll probably find someone to play against.