While every other FF is represented in the general boosters and the general set of cards, the sprawling nature of Commander Decks means that the four FFs that have a Commander Deck themed around them naturally have a huge advantage - their characters, stories, and worlds are far more heavily represented than the others
Whenever you discard a card, you may either draw a card, create a Treasure token, or make each opponent lose three life
They are the superstar cards of the best of the best decks
You've Got a Friend in Me allows you to look at your deck and put Toy cards into your hand if they're in the top four cards of your deck
Planeswalker decks, or Super-Friends as we usually call them, arent nearly the most popular strategy in Commander
You've also got ninjutsu, which lets you swap an unblocked creature with a ninja for a cost, and can be a lot of fun to play with, but mostly in casual formats