Oh, I meant that the final step is literally impossible, you can't roll a 21 on a d20!
Ohhhhh... I misread it. For some reason I thought that if you rolled a perfect 20 on the last step you were free. My bad.
Actually, no, your bad. This is a game breaking bug and I insist you fix it immediately! Lol
I suspect it might be a combination of both of us on this one! Not sure if my writing was the most clear on the roll needed for each step.