I finally beat set 8 of the master Collosseum. He used Kyogre and Mewtwo and I used Starmie and PorygonZ. I switched Starmie for Groudon to get rid of the rain and both of his Pokemon used Thunder on Groudon. This enabled PorygonZ to use Trick Room. I was able to beat his Kyogre with a combination of Thunderbolt from PorygonZ and Solar Beam from my choice speced Groudon. He attempted to beat PorygonZ with Mewtwo, but Z survived with his Focus Sash. He sent out Latios and I used Ice Beam on him, though he survived. I used Solar Beam on Mewtwo (obviously not fainting him). He beat PorygonZ and nearly beat Groudon. I sent out Starmie who finished Latios with Ice Beam. Mewtwo then finished Groudon. He sent out Palkia and I sent out Darkrai. I used Darkrai to beat his Mewtwo and then used Psychic on Palkia. His Palkia attacked Starmie with spacial rend, fainting it. In the final round, I used Dark Pulse on Palkia and defeated it to win.