Forum:About Missing the timing

lets say my opponent summons blowback dragon and immediatelly activates its effect while i have bottomless trap hole set>do i have to activate BTH before my opponent choses a target for blowback's effect or can i use it after he has selected which card to destroy?the reason im asking this question is because, if i have to activate BTH before my opponents has selected a target then it is obvious he wont chose to destroy BTH.(hope my question isnt too complicated)91.140.84.132 (talk) 10:46, October 8, 2011 (UTC)