Vein Ripper punishes opponents for trying to deal with it and easily punishes an opponent for letting it stay on the battlefield, given any sac outlet, multiple blockers, or board wipes, each of them can trigger the ripper multiple times
Cheeries has needed a new toy to play with for a while, and Pinnacle Emissary and a hand full of cards like Tormod's Crypt, Mox Amber, Ornithopter, Mishra's Bauble, Zuran Orb, and Paradise Mantle delivers
Honorable Mention #2 (#12 Overall)
That absurd power is why Cabal Ritual has been a crucial part of many Legacy combo decks like Storm and Doomsday
This should definitely be built around, using creatures with evasion, double strike, and other good damage-enhancing abilities to mutate your commander onto
This means that you get your cards whether it dies, is sacrificed (which is also dying, but can sometimes differentiate other triggers), is exiled, or is returned to your hand