In this card's effect. Does this monster go up by 300 in every single one of his battle phases? This card's effect is not specific just like Armityle the Chaos Phantom's effect. 13:54, April 5, 2010 (UTC)

It just says "during your opponent's Battle Phase.", so it gains ATK during that time, then loses the ATK after that time passes.
If it says "during each of your opponent's Battle Phase.", then it would keep the ATK points and gain again. Falzar FZ 14:04, April 5, 2010 (UTC)