It's a bleak time for the Rebellion. The Dark forces of the Empire have driven the Rebel forces into excile on the ice planet of Hoth. This was the first set to include images from The Empire Strikes Back. It was also the first set to introduce the mechanic of a "persona", a version of a main character with alternate abilities (e.g., Commander Luke Skywalker vs. Luke Skywalker). Also included in this set were the immense AT-AT walkers. Another new rule was the "Hoth Energy Shield Rules" which prevents the Dark Side player from deploying his cards on the first four "marker" Hoth sites, and all interior Hoth sites; unless the Main Power Generators is "blown away".