Tiamat is an epic queen of evil chromatic dragons. My first encounter was on the Saturday morning D&D Animated Series back in the 80's.
I stumbled across a D&D Mini Aspect of Tiamat while searching for Heroscape figures. After trying to make a suitable custom card for her without satisfaction I took the next step in putting together her own Heroscape battle scenario.
Some of you more familiar with D&D and the genre will know Tiamat as Takhisis from the Dragonlance campaigns.
You can find the Battlefield Building instructions Here