[solved] Attacks which are random

[Madara Uchiha]

well the title says it all but if you don't understand i will explain. Well i want to know how to create a random attack for example: you press the key combination D^A but then it doesn't go to a certain frame it goes to a random one.
also another thing i need to know. is it possible for a ball to opoint out more of itself depending on how many characters their are on the field example:
1 character on the field 1 ball
2 character on the field 2ball
etc.
answers please: