It can be hard to hold up four mana, but if you sacrifice a large amount of creatures in one go, you can instantly replenish your board
The iconic Starscream is pretty decent
Alternatively, Cosmic Spider-Man is a great new keyword soup commander, with his WUBRG colour identity letting you run Odric, Kathril, Indominus Wreck, and Aurelia all together in a soupy deck for the very first time
Over time, this strategy has evolved, and many similar mechanics have been introduced in Magic: The Gathering
The Earth Crystal is a counter doubler, and cost reduction, at four mana
Remember how terrifying he was on the board whenever he came out and generated scary amounts of lore whilst also clearing your board