Forum:Triangle Power vs Aegis?

If I activate Triangle Power with monsters such as Cloudian - Smoke Ball on my field and then activate Aegis of the Ocean Dragon Lord; at the end phase, can I choose to activate Triangle Power's monster destruction effect before Aegis expires - sparing my monsters? If so, then would my Smoke Balls keep the boost permanently? ty74.177.157.130 02:09, January 13, 2010 (UTC)