Tribulation of Martin Ode

You may sacrifice a creature named "Scourge of Martin Ode" and pay {2}{b} instead of paying this card's mana cost, if you cast it this way it gains Haste.
When Tribulation of Martin Ode attacks, exile all untapped creatures the defending player controls. Cards exiled this way gain "You may cast this card from exile. If you do it enters the battlefield tapped."