Runner's Objective: get your mage to the end of the obstacle course arena alive before any of the other runners.
Dungeon Master's objective: kill all the runner mages.
The Dungeon Master flies high above the arena, out of reach of the mages on the ground. All spells the dungeon master casts must be spells that target a zone or the arena.
The Dungeon Master's spellbook points depend on the length of the obstacle course.
During the upkeep phase if you're a runner, you can choose to move your mage up to one zone forward. This does not count as a move action, push or teleport. (let's just say it's the arena moving beneath your mage)
You can make the obstalce course arena any shape you want!
What do you think?