Whenever the controlling player is dealt combat damage, it forces each opponent to sacrifice a creature that dealt combat damage that turn, before the Ring tempts the player
This is a significant improvement over moving cards in and out of the frame one at a time by hand, and you can scan over 150 cards before needing to empty the tray
Wonder Man is legendary, but if you find a way to control two of him, you'll be able to activate power-up abilities of permanents you control two additional times
Melvin: Oh look, you can see Spock coming back to life in the bottom corner
You can exile a card in your hand using suspend any time you could cast that card
Age-Graced Chapel Glasswing Grace isn't the type of card that's going to steal games of Commander like it might in Limited, but this is still a sizeable boost as an alternative to just playing Age-Graced Chapel