Mewthree used: Dugtrio, Tauros, Persian, Snorlax, Gengar, and Kabutops.

I lead with Hypno, him with Dugtrio. He CH earthquakes, I reflect, he CH earthquakes again.
5-6 M3

I send in Vileplume. He slashes, I sleep powder, sub, petal dance, hes down.
5-5 Tie

M3 sends in Tauros. It fire blasts and burns the sub, and I fail a sleep powder, he fire blasts and I fall.
4-5 M3

I send in Clefable. I thunder wave, he earthquakes, he doesn't have body slam, good news. I switch to Dewgong to take the hyper beam, CH surf, he recharges and I surf again.
4-4 TIE

In comes Persian. Figure one slash won't kill me but if i rest he'll get 3 in and i'll be dead anyway, so I go for the freeze with blizzard. doesn't freeze, 2 slashes kill me.
3-4 M3

In comes Clefable. I t-wave, he screeches. I CH Double edge, persian down.
3-3 TIE

In comes Kabutops. I t-wave, he sword dances, I t-bolt, he hyper beams, clefable down.
2-3 M3

I send in Nidoking, one quake drops it.
2-2 TIE

He sends in Snorlax. I focus energy, he blizzards, I quake it to 50%, he blizzards me to 5%, one more CH quake drops it.
2-1 NSFT