the unicorn look at you "Me? my names is Aurora, I'm the guardian of the gem, I'm protecting it for a thousand years.......yeah, I think I'm more or less like a ghost"
She walks between you and the doors
"if you want the gem, you have to pass a test.....you can chose a door, behind each door there is a test for you, and if you pass it, you can have the gem........easy, right?"
her horn begin to glow, and on each door appears a number (from 1 to 20)
"of course, if you want, you can go back and leave the gem here"