Put one of them into your hand and the rest on the bottom of your library in a random order
Commanders all about big, splashy spells that are far worse for you than a 3/3
I think we can do better, although it is a good creature type, and some of these U/R decks can trigger prowess a fair number of times
(To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Avatar Roku showed Aang the truth behind Sozins Comet
In the case of ties, every player who picked the highest number will take damage, and every player who picked the lowest number will do nothing
Messing around with summons and shield counters and stun counters just sounds enjoyable, even if it comes off as a bit complicated for a Commander precon