http://yugioh.wikia.com/wiki/Stop_Hammer

[Toffee.]

When your monster declares an attack: Negate the attack, and if you do, that monster loses 500 ATK.

So how about that card name, guys?
Really, they should print this, just for the sake of it's name. I mean, we have Attack the Moon! and Do a Barrel Roll!, so why not?
Also would be pretty cool if, we got something like this, just for sake of it being rather silly.
Discuss.

[~British Soul~]

So how about that card name, guys?

Totally didn't see that coming at all.

[evilfusion]

Yuma, when people can predict that you're using Double-Up Chance, it might be time to stop doing it. Unfortunately, this loses meaning because you keep WINNING because of it.

 

Card only exists to Trigger Double-Up Chance. It only negates YOUR monsters' attack, making it really kind of meh.

[Miror B]

Buff it please :/

[AGATHODAIMON BANGTAIL COW]

The ATK modification allows you to stop the battle if your opponent plays Honest or Kalut or even Shrink. I think. The ATK modification being after the other effect makes me doubt if such a play can happen.

 

But yeah, this card needs to be turned into something awesome effect-wise, since it already is name-wise.

[Miror B]

The ATK modification allows you to stop the battle if your opponent plays Honest or Kalut or even Shrink. I think. The ATK modification being after the other effect makes me doubt if such a play can happen.

The timing on the card is "when your monster declares an attack".

By damage calculation, that timing has passed.

So no it won't work.

[heraldry_lord]

Buff it please :/

 

This is actually very easy to buff. Just replace "your monster" with "a monster".

[玄魔の王]

Not even touching the name pun. Too obvious.

This is actually very easy to buff. Just replace "your monster" with "a monster".

I could well see that being the case.