The third iteration of Loot also happens to be its best, with versatile abilities to help you do a ton of different effects over the course of a game
Force of Negation is no slouch in Commander, either, with nearly 350,000 decks running the card by EDHRECs current count
Pair it with discard or self-mill effects like Cathartic Reunion to make it easy to bring it back while you fuel constant aerial attacks
Anytime Magnus deals combat damage to a player you get to make a 3/3 Spawn creature token, while at the same time reducing the cost of your spells by one
Niv-Mizzet, the Firemind was the first version and was one of the most popular and powerful commanders during the early days of the Commander format
Invasion of Ikoria has the same effect for only a single extra green mana, with the added benefit of being able to transform into Zilortha, Apex of Ikoria, which can allow you to defeat your opponents way more quickly