Forum:Codarus Effect + MST = Negates Codarus' Effect?

I declare to activate Codarus]' effect to send [[A Legendary Ocean (Umi) from my side of the field to select 2 cards on my opponent's side of the field and send them to the graveyard. When I declare to activate Codarus' effect, that means I would have already sent A Legendary Ocean to the graveyard. This means that my opponent cannot use Mystical Space Typhoon to destroy my A Legendary Ocean to negate Codarus' effect. Is that correct?

Unless my opponent is able to chain Codarus's effect when I declare to activate Codarus effect. Or is my opponent able to chain Codarus' effect after I pay the activation cost of sending A Lengendary Ocean (Umi)

May someone clarify this for me? I will appreciate it. --99.120.88.198 (talk) 19:13, August 6, 2011 (UTC)