The Ur-Dragon is one of the best dragon commanders ever printed and revolutionized this strategy, plus it uses all the colors of the Magic rainbow to access all the best dragons
Mutate Decks If you want to go the body horror route, mutate decks are by their very nature appropriate
Importantly, this triggers whenever a creature deals any kind of damage, not just combat damage
Like most Magic: The Gathering cards, the value of Corrupt depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The Brothers' War)
You can defend yourself or use it when others are targeted, depending on what you need in the moment
While there are Commander decks of all colors that can make use of Treasures, a handful are focused on making as many Treasures as possible, which usually require two or more colors