The biggest difference between keywords and ability words is keywords provide defined game mechanics, while ability words simply categorize abilities that often vary in effect from card to card
Chaos Whenever Vincent deals combat damage to an opponent, it deals that much damage to each other opponent if Vincent's power is 7 or greater
Pair it with free or low-cost interaction like Gut Shot, Mutagenic Growth, or Lightning Bolt, and it can deliver massive swings while it still plays defense with efficient trades
Any land that can tap for more than one mana is extremely powerful, and the closest parallel, City of Traitors, is significantly powered down by comparison
Those sorts of commander abilities arent very common though, so it might be easier to just intentionally leave yourself a little gap in the prison wall
That's right