The flavor of the games is evident in decks led by Sephiroth, Planet's Heir and Cloud, Planet's Champion
For example, if an effect stops you from casting spells with mana value 2 or less, you can't cast Peter Parker, but you can still cast Amazing Spider-Man
They mutate into the creature on top plus all abilities from under it.) Trample You may cast Brokkos, Apex of Forever from your graveyard using its mutate ability
Count on Luck The biggest problem with Count on Luck is that you need to be mono-red for this to be good, but then again, the deck is its natural home
With Expressive Iteration being in so many decks and reaching all 4 copies even in a format like Vintage, I hear a lot of players saying the card is too good in both Modern and Legacy, comparing it essentially to Treasure Cruise and Dig Through Time, which both formats have seen and banned