The Old Demons Castle

•{t}To add{b}{b}{b}{b}{b} and lose five life.
•{t}{5}{b}{b} To summon a 7/7 demon with Flying and LifeLink.
•{t}{10}{b}{b} To sacrifice 'The Old Demon Castle' to search your libary and graveyard for all demon creatures and put them on the field untapped.