The City of Veil
There are as many arenas as there are Illusionariums. Where the Illusionariums focus on glamers and illusionary displays, the arenas focus on physical combat and sport. Champions, warriors, gladiators, all make their names in the arenas. They can rise to fame and fortune if they are skilled enough. In some of the more wealthy arenas, they employ Custodians to utilize their magic to display the action on the ground into the air for all to see.
Most of the times, the arenas have seasonal tournaments that focus around the Dragon Games (there are three types). But there are also times when a legal dispute is settled through combat inside the arenas.
Also, when ash companies come back to Veil with strange monsters and creatures, they are sometimes brought into the arenas to fight against champions.