When this card is activated: You can add 1 "Fairy Tail" monster or 1 "Fairy Tale Tails" from your Deck or banishment to your hand. Your "Fairy Tail" monsters can attack directly. Once per turn, if your opponent Special Summons a monster(s) and you control a "Fairy Tail" monster (except during the Damage Step): You can target 1 Effect Monster your opponent controls; negate its effects, also its name becomes "Prince of Fairies". You can only activate 1 "Fairy Tail Ball" per turn.