Wonder World LLC is the largest operator of virtual theme parks, amusement parks, and other non-sport, non-mmo virtual environments.
The net went down, it went down hard. People got hurt, people died.
Things are not what they appear in the Cognitive Network
The CogNet might be policed by sentient programs and controlled by artificially intelligent super computers, but it is built on top of millions of organic memory cores that function as its host.
Mages/ wizards and such use cards (playing cards or tarot cards) as training tools. The patterns created by certain layouts of cards are mnemonic devices to teach key elemental associations and paths. With such interesting names as the Tree of Life, Phoenix's tail, Rythm of Heart, and Balance of the sphere, there pattern represent the matrices used by magic users to focus and present power. Spell processes can be represented by a sequence of cards.
So mages will often be seen handing around hands of cards.
Wizards will have a deck of cards with them. Since cards were used to train wizards in legerdemain, Since they have cards with them, they frequently know how to use them. Guild magic users often have a knack for fancy shuffles, palming cards, and a variety of card tricks and games.