Bloodrush

Finally I will post about the Gruul mechanic Bloodrush. Bloodrush only appears on Gruul creatures. You pay a certain amount of mana and sacrifice the creature. Then, target attacking creature will get a bonus. This bonus is the power and toughness plus any other abilities like Trample or Double Strike of the creature you sacrificed. So the Bloodrush mana cost and bonus are different on every card.