A DMâs perspective on what elements make good character back stories. Jason OâBrien a DM with over 20 years of DMâing experience will show players how to make it easier for their DMâs to weave the story & help DMâs find commonality in their players stories. This group oriented brainstorming session is a must for both new and experienced DMâs and players. Attendees are invited to bring their own back stories to this session for input.