Ancient city - rainbow ruins v Necrovalley

[Terry the Elder]

I have ancient city - rainbow ruins on the field, 3 crystal beasts in the s/t section and two face up crystal beast monsters in play.

My opponent plays Necrovalley (or any other field spell card for that matter) can I tribute one of my face up crystal beasts and negate the activation or will Necrovalley destroy my ancient city before I can respond?

Thanks in advance.

 

[Fury]

If you negate the activation of your opponent's field spell than your own field spell wont be destroyed.

Ancient City - Rainbow Ruins says:
You can send 1 "Crystal Beast" monster you control to the Graveyard to negate the activation of a Spell or Trap Card and destroy it.

So you see it works.

 

[Terry the Elder]

Thanks, I did think I could but wanted to be sure.

 

[Oceanus]

Ruins is gone before its effect could be chained.

 

[DarkLogicianOfCaos]

That is only correctif you try to replace your own Field Spell card and it is negated. If your opponent's is negated, yours survives.
http://lists.upperdeck.com/read/messages?id=10316#10316

 

[Digital Jedi]

Ruins is gone before its effect could be chained.

When your opponent activates a Field Spell card, you can chain an effect to negate that Field Spell's activation to preserve your own Field Spell. Ruin doesn't leave the field until Necrovally resolves

Acitive Field Spell vs. activated field spell negation.