Forum:Shi en vs continuos spells

ive got a question about legendary six samurai shi en, if my opponent has an already activated black whirlwind on the field and hi summons for example shura , could i negate the black whirlwinds effect with shi en , even do its already activated??? thanks a lot 190.80.211.215 (talk) 04:28, March 27, 2011 (UTC)