Bular, son of Gunmar

As long as Bular, son of Gunmar is on the battlefield, you gain another attack step after second main phase. Bular, son of Gunmar can attack twice before tapping.
{t}{b}{b}{x} untap X troll or changeling creatures
Whoever wears the amulet of Merlin, I shall destroy him, just as I have done with any single one of them!"