MTG >Combos >Herrería del clan Krark +Recuperador myr +Arrastrero de chatarra +Cripta de maná +

all pieces in play tap and sacrifice Mana Crypt, you gain 4 mana sacrifice Myr Retriever and Scrap Trawler add 4 manas use the 2 trigger's of the myr to return Scrap Trawler and Mana Crypt use the trigger of Scrap Trawler to return the myr pay 5 manas and put all pieces in play again to repeat