You need to be careful with A Whole New World since you can potentially be giving your opponent a whole new hand as well
Apart from the issue of some cards not having playable substitutes, the other reason I tend to dislike this advice is that part of what makes formats like Commander fun is the diversity that they offer, and this diversity is built, in part, on players being able to access and play with weird, old, nostalgic cards that don't really see play in other formats
If the creature doesn't meet any of the above exceptions and can attack, it must attack a player other than the controller of the spell or ability that goaded it if able
You know when youre in a pod with your buddy, and it feels like collusion to team up with them or betrayal to attack them
This menacing shadow holding two sharp weapons with crazy eyes and a terrifying grin seems to have come from some evil Halloween cartoon
The optimal build of this deck is still evolving, but players like AsianKoala are testing out Momo as a potential addition