If your opponent has any Benched Pokémon, he or she chooses 1 of them and switches it with the Defending Pokémon. (Do the damage before switching the Pokémon.)
Grass · Grass · Grass · Grass
Mega Drain 40
Remove a number of damage counters from Butterfree equal to half the damage done to the Defending Pokémon (after applying Weakness and Resistance) (rounded up to the nearest 10).
Battle profile
WeaknessFire ×2
ResistanceFighting -30
Pokédex entry
In battle, it flaps its wings at high speed to release highly toxic dust into the air.
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