15 Island
Invasion of Vrynn: Four mana for this many cards is pretty standard, and getting a one-shot copy effect on the other side is tasty
It's also a decent alternative to running more tutors if you can't afford the good ones, since more cards drawn means more chances to find the card you were looking for
This creates a constant strategic dilemma: Do I spend my DON
So eventually, many, many booster packs from Lightning Clubs Nicholas and Brandon later, we finally have the required Pidgeys and Pu-Pu, and Im sufficiently annoyed by this epic time waster that I cant be bothered to describe in close detail just how efficiently we dismantled these guys with Fighting and Lightning types (even though their staples Snorlax, Kangaskhan and Chansey gave them considerable bulk!)
Kefka, Dancing Mad Kefka, Dancing Mad takes a lot to get to and when you combine it with choice removal like Soul Shatter or Flare of Malice, that random card you get from each opponent's graveyard isn't so random anymore