I have been collecting vintage pokemon cards recently, and I am looking for more cards with interesting attacks/pokepowers.
Most cards have something like this:
> Do 20 damage
> Do 30 damage if heads the defending pokemon is poisoned

Any gen 1-3 pokemon with interesting energy combinations/effects that I am overlooking?
Also, what websites do you use to buy cards?
I like collector's cache but tcgplayer seems cheaper. Any others that are reputable? Thanks.