I was playing through Kingdom Hearts 2, tried to use Master Form and got Anti Form instead. Then I got a major "theory brainwave". What if Anti Form isn't random, but is needed for Final Form? What I mean is, you have to trigger Anti Form a certain number of times, and the next time it would normally be triggered, you get Final Form instead (my guess would be 12, and then on the 13th trigger, Final Form is obtained. Because "Final" has the same number of letters as "Roxas" and Roxas is the 13th Org. member). What do you think?