When devign (the period of overlap between design and development) began, lead developer Ben Hayes had an idea
Its a very strong engine of repeatable death, as the cycle of life brings you cards from the best or worst of your lot
Krenko, Baron of Tin Street Krenko, Baron of Tin Street plays well with artifacts to sacrifice, and when it does, you can get what is often the first haste creature any player meets , a Raging Goblin
The return of Planechase cards: the ability to walk across planes with the roll of a die
It also has this big old chunk of text on it, Whenever a land enters the battlefield under your control, you gain 4 life if this is the first time this ability has resolved this turn
Crucible of Worlds is less appealing in a Standard environment when they can simply kill you on turn four or five