Darkrai, Kyogre, Groudon, Arceus, Dialga. Darkrai beats Giratina, Lugia, Jirachi and some others. Kyogre destroys almost anything, Mewtwo beats Shaymin-S, Darkrai, Blissey and some Arceus. Groudon boosts Fire Blast from Mewtwo and rapes Tyranitar, Jirachi, gives you weather support. Dialga resists Dark, Draco Meteor slays Giratina and Fire Blast owns Jirachi.