Forum:Different printing of cards?

Which card ruling is official if there are different printing of cards.

for example there are two copies of waboku.

the effect of the one found on this website is "You take no Battle Damage this turn. Your monsters cannot be destroyed by battle this turn."

my copy of the card says "any damage inflicted by an opponent's monster is decreased to 0 during the turn this card is activated."

my card is obviously missing the "monsters can't be destroyed by battle" clause

which card ruling is official?

and if the one on here is, then how should I prove the official effect of the card at regionals?

thanks in advance