LogFAQs > #913048069

That puzzled me too, but I didn't even get to the grass types before the battle was over. The Raichu had Wild Charge too, which is the worst move to go up against.

I do have some pretty strong Houndoom with double Dark moves, so I'll try to throw those in and focus more on offense and less dodging.
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Official King of PotD
You only need one T-Rex to make the point, though. ~ Samus Sedai