I like it. Seems like a great card to be used. Would be useful in a Fire stall.
That part doesn't make sense. Most Fire stalls don't use high-attack creatures (which this card would benefit the most, as a Ruby Dragon with its attack halved would cause the majority of creatures (minus dragons and a few others) to be unable to attack), and Fire Stalls tend to mostly stack up on major PC and CC effects (Explosion, Rain of Fire, Rage Potions), with Fire Lances and Farenheit for the killing blow with the stacked
quanta.
That said, does this card's effect last until the 'non-attacking' effect wears off? Or is it permanent (i.e. - you halve one of your creature's attack permanently with each use?)?