Changes

*The [[Tributingmonster effect]] an [[Aqua]]-[[Type]] Monster "''This card can attack 3 times during each Battle Phase''" is a [[CostContinuous Effect]] to declare an attack.<refname="No.8032">[http://yugiohwww.faqdb.konamiyugioh-card.jpcom/EokpControlyugiohdb/faq_search.action?&langope=en4&tidcid=462518032&eventrequest_locale=FE0006 ja Konami FAQOCG Card Database]: Effect Monster > Hydra Viper</ref>

*The [[monster effect]] "''Each time this card declares an attack, you must Tribute 1 Aqua-Type monster''" is a [[Continuous Effect]].<ref name="No.8032"/> * You [[Tribute]] 1 [[Aqua]]-[[Type]] monster in your [[Monster Zone]] when "[[Hydra Viper]]" [[declare]]s an [[attack]]. If there is no Aqua-Type monster in your Monster Zone, "Hydra Viper" cannot declare an attack.<ref name="No.8032"/> * You can [[Tribute]] a [[face-down]] [[Defense Position]] [[Aqua]]-[[Type]] monster in your [[Monster Zone]] when "[[Hydra Viper]]" [[declare]]s an [[attack]].<ref name="No.8032"/> * If a [[face-up ]] "[[Poison Draw Frog]]" is Tributed for [[Tribute]]d when "[[Hydra Viper]]"[[declare]]s an [[attack]], then you can activate the effect of "[[Poison Draw Frog]]" and to draw one a cardat the timing of "Hydra Viper" declaring an attack.<ref>[http://yugiohwww.faqdb.konamiyugioh-card.jpcom/EokpControlyugiohdb/faq_search.action?&langope=en5&tidfid=466337982&eventrequest_locale=FE0006 ja Konami FAQOCG Card Database]: When declaring an attack with "Hydra Viper", if a face-up "Poison Draw Frog" is Tributed, does the drawing effect activate?</ref>