Venasaur @ Venausaurite
Modest
Clorophyll
252 SpAtk, 252 Hp, 6 Spe
-Sunny Day/Amnesia/Sludgebomb
-Solar Beam
-Grassy Terrain
-Ingrain
Setup Sunny day, either with venusaur or something else thats holding a heat rock, switch or die and send out venusaur, Chlorophyll with double his speed and should allow him to outspeed WashingFucker, so mega evolve right away, if you plan on attacking, or use two turns and setup ingrain and grassy terrain. ingrain will heal you,a nd grassy terrain will heal anything thats grounded, so rotom will NOT get healed, so you'll have two healings going on. After that, mega evolve and use solarbeam, because mega forms dont use the speed stat on the first turn, you shoudl have double speed from chlorophyll, and solarbeam doesnt charge on the first turn in sunlight, so you should be able to take out WashingBitch in a few turns, if you setup healings.
