A Hidden Commander is an important card that functions like the centerpiece of a Commander deck despite not actually occupying the command zone. The real commander is often chosen because its colors or abilities help find, protect, or support this secret build-around.
A deck might use a tutor-heavy commander to consistently locate a card such as Biovisionary, Revel in Riches, or another unusual payoff. The challenge is building enough redundancy that the deck still works when its unofficial commander is removed.
