The following link (Google Doc) displays each mage's current items and our loot ladder. Your position in the ladder effectively conveys where you are in the loot order. Once you win an item, you drop to the bottom of the list. If you do not need an item, you can pass to the next person.
https://docs.google.com/spreadsheets/d/ ... sp=sharing
If you have any questions, please post here.
FYI - The Best In Slot list used came from Wowhead Mage Best In Slot RAID Gear