Fisherman of Legend

If your opponent activates a monster effect on the field, or when an opponent's monster declares an attack, and "Umi" or a card that mentions "Dark Time Wizard" (except "Fisherman of Legend") is on the field (except during the Damage Step): Special Summon this card from your hand. If this card is Special Summoned: You can target 1 monster your opponent controls; destroy it, also during the End Phase of this turn, return this card from the field to the hand. You can only use each effect of "Fisherman of Legend" once per turn.