First let's review it.
 
Defenseless Beach
Rare Battleround
Reduce each player's PUR by 1.
 
Ok, this is probably the best Battleground made yet.  This works great in ally decks, since you can stay at zero and use your allys power in combat.  And Works great against any non Tokui Waza deck.  They will have such a low PUR they won't be able to defend against your phsyical.  Sometimes you can get them to have a Power Up Rating of ZERO!!!  Who can resist that?  I might give you a dive, but you can run cards like Hidden Power Level to make up for this tiny disadvantage.  It tears apart energy decks, it's kinda sad when they can't use there attacks.  I like to use this card in TW decks.  Espically with high pur charactors like Piccolo, Gohan, and Krillin.  And is very effective against King Cold, Goku, Vinegar, Spice, Garlic, Trunks, and all the SS MPs.  I personally use this in all of my decks.  I' recommend this card highly!!!