There was a trader (who has since been banned from all StarCityGames.com events) that made a splash at tournaments last year due to his desire to trade his expensive staples for your bulk cards
Because Rakdos the Defiler needs to damage a player in order to trigger, and we have three opponents to take care of, it's best to find a way around the drawback
I cannot emphasize enough how trivial this requirement is in Commander
Fey Steed Fey Steed, 2WW, is a good support card when it comes to the attack phase
5 Cut: Furious Rise The Enchantment May Result In Card Loss To give space to any of the recommended upgrade cards for Limit Break, Id recommend cutting Furious Rise from the deck
You have to wait a turn, which can be scary -- but after that it can help you run away with the game, since you'll get a copy of your best creature -- and it'll just keep doing it from there