As he is listing off the choices for your transformation you get a better look at him. You start to size him up as a Moon Elf when you notice something glinting in the rays of the setting sun he has strapped to his side. "Hey, what's that?", you say pointing to the object.
"This?" he says pulling it into view. "It's a mask I found washed up near a river further on ahead." The wood was green in color, most unusual. Suddenly, you remembered something from a movie you once saw.
"Do you think I could try it on?" you asked the elf, a little anxious.
"I guess I don't see the harm, here." He handed you The Mask and you put it on, feeling the sucking as it wrapped is self around your head. And you became The Mask!