Gorm the Great

If a creature can't block Gorm for any reason (such as being tapped), then it doesn't block. If there's a cost associated with having it block Gorm, the player isn't forced to pay that cost, so it doesn't have to block in that case either. If this means that no creatures block Gorm, Gorm isn't blocked.

To have two commanders, both must have the partner ability (featured in the Magic: The Gathering—Commander™ (2016 Edition) set) or corresponding "partner with" abilities as the game begins. A creature with a "partner with" ability can't partner with any creature other than its designated partner. Losing a partner ability during the game doesn't cause either to cease to be your commander.

"Partner with [name]" represents two abilities. The first is a triggered ability: "When this permanent enters the battlefield, target player may search their library for a card named [name], reveal it, put it into their hand, then shuffle their library."