Jaces +2 ensures the opponent will continue to have dead draws, as it plunges any threats they might get down to the bottom of their deck
Agatha allows you to pay X less for your activated abilities of creatures you control, where X is its power
Turn our attention to the mechanics, however, and things become a little more problematic, because this card is insanely overpowered
Having only a turn with your new cards shatters the illusion of symmetry as you obviously use the Jar in your turn on most occasions rendering all but the instant speed cards your opponent draws irrelevant
However, the Cloud card was only available to Las Vegas Pro Tour participants and now sells on the secondary market for hundreds or even thousands of dollars
Araumi of the Dead Tide is a near perfect commander in my opinion and I think more people should check her out