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!!!