Mage - Arena Goals

[Raighoc]

What is our function as a caster DPS in arenas? Who should we avoid, how do we determine first kill target, who should be CC'ed, last priority
etc? What do you think is a good youtube/twitch resource to learn what my main goal in arenas are?

[BunnyFufu]

I think that it is better to watch some sorts of competitions, where professionals play but not any simple streamers.