Calling All Simon, Wild Magic Sorcerer Players !!

Hello All! I've been looking to build a dice roll commander (in blue) for some time now, and I've recently discovered this commander. So, I have a few questions about it:

1) How does it win ?

2) What are the recommended/ all-star cards for it ?

3) The text says "3 cmc or greater" for the activation. Is this restriction workable at all, or is it too high for high powered games ?

4) Should I use the normal mono-blue spellslinger payoffs since it doesent rlly mesh with other dice roll cards ?