Modal spells have always been popular for their versatility and include many popular Commander staples
Most multiplayer players are running mass removal in their colors, so if you exile Damnation, Wrath of God, Austere Command and Blasphemous Act you get one for sure
While Ocelot Pride isnt quite that busted, I see the similarity: If either of these cards arent answered, they win the game with little effort
While on the bad guy's side of the struggle, there's a terrifying black reprint, Phyrexian Obliterator
Grand Coliseum Five-color decks and commanders that care about you taking damage will love Grand Coliseum, and its easy to see why
not attacking) if you believe your deck has inevitability