Ok, I've been thinking, and Ive come up with a way to deal 1000 damage.
First, your playing a R Hitmonchan deck with porygon. Your opponent is
playing a Blaines RK9 deck w/ Porygon. You used conversion to change B. RK9
weakness to fighting before porygon got smacked to the moon. Then, your
opponent used his Porygon to change R. Hitmonchans weakness to fighting. It
is now R Hitmo vs. B. RK9
You used crosscounter. He uses Firestorm w/ 4 Pluspower, doing 280 because of
weakness. You flip heads for Crosscounter, doubling the damage by
Crosscounters effect to 560. Then, because of RK9s weakness, double that,
giving you a total of 1120 damage!!!

M.Siller
stlrams64@aol.com