Jest of Many Faces

Many Faces - If Jest of Many Faces is your commander, Jest, Madness Unbound, Jest, Tragedy Unbound, and Jest, Humor Unbound, can also be your commander. You may only have one commander on the battlefield at a time. Your commanders all have "{t}: Cast one of your commanders without paying their mana cost. If you do, return this card to the command zone and reduce its cost by {2} for the rest of the game"