pretty much all of them have effects that make you want to keep them face-down whenever possible, one even having an effect that is negated if it's ever face-up
Assault Carrier" once per turn
The other, less fair-minded choice is to find a way to cheat the parity of your prison effects, and then canter to a win while everybody else is still stuck in the quagmire you created
While playing strong cards can win lots of games in Commander, playing cards that make your opponents scratch their heads is sometimes even better
These Protect your Favorite Modern Booster Packs from getting scratched, smeared, etc
However, three mana and three life for any card in your deck is almost always a rate that players will be willing to pay, as the life-loss will likely be offset by whatever combo piece or massive threat that you pulled out of your library