Whether youre competing against a human or an arcade games programming, its all about looking for opportunities to strike your blow while keeping yourself protected from their strikes
An Eternal Witness or Karmic Guide or Primeval Titan in those formats where its legal
Name meets function, all of it
Sacrificing low-mana creatures and creature tokens to transform Elesh Norn may be worthwhile
Unless these are also creatures, they should be counting with your noncreature spellsso narrow it down to the ones you really want to be playing with
I've had the most fun with this deck when using Human Torch as the primary Commander, and he's also the card I've struggled the most against, but each of the four Heroes is valuable in their own right, and the fact that all four are always in the deck means you're never far away from some game-changing plays