In MTG, if a creature recieves -x/-x which causes its defense to drop to zero, is the creature destroyed?

Question

I have this question because of the plansewalkers scorn card in the planeshift set.

Answer 1

Greetings...

Yes, the creature will be destroyed.  When a creatures's defense is brought to 0, it will be destroyed as a state-based effect.

For this, and more rules answers, you should visit the official WotC website.

Until that time...

Answer 2

Yes, lowering a creatures toughness to zero will cause it to go to the graveyard.

Answer 3

when its tuffness equals 0 its gone.

tuff ness is after the slash

its goes strength/tuffness.