Determined Iteration pairs well not only with Deadpool and The Master, but also with any other methods for making Deadpool tokens you might have - especially non-legendary clones that won't immediately die
The only downside of this card is that its Legendary, meaning you can only have one in play at a time
The support cast is not filler
It is cheap and not only gives you great legs to win with it will stop your opponents onslaught dead in its tracks
Another thing that makes aggro creatures great is when they come with a little extra, like a strong enters ability or a passive effect that adds value over time, like Voice of Victory, Agent Bishop, Man in Black, Luminarch Aspirant, or Nishoba Brawler
These anthems are the best of the best to give your wide board the power needed to cross the finish line, especially in a format like Commander with three opponents and lots of life to get through