A couple flaws as well. 1. Weak to Psychic, doesn't really help against Gengar that much. 2. You have to send Pokemon to your Lost Zone to do more damage. Lost World will still be wrecking you with an autoloss.
yeah You KO every Pokemon. Then they play down Lost World and win. Thanks for all the hard work of setting up a Strong Lucario that only KO's 1 or 2 Pokemon.
Getting one more of your Pokemon into the lost zone won't be too difficult for some decks.
It can be done. All you need are no more then 3 pokemon in the lost zone to git for 90 and if they have gengar use Umbreom UD and there are no problems.