I like this effect so much Im also running Sword of War and Peace for the protection, lifegain, and burn effect
Why its a contender: Crucially, it allows players to stop game-winning threats even when they have no available mana, fundamentally changing how high-power formats are played
Meathook Massacre II Meathook Massacre II isn't quite as good as the original, but it's occupying different space anyway, and it's pretty popular in Commander for its ability to clean the board and its potential to refill it in your favor with the right amount of investment
I'd love to hear from you in the comments
Ivory Tower Now for a historical pick
The rad counters can trigger the milling, but youre obviously going to want to include a lot of other ways to mill in your deck