Cannot be Normal Summoned or Set. Must first be Special Summoned by returning 1 monster from your Graveyard to your Deck. Once per turn, during your Main Phase: You can select 1 monster your opponent controls; increase the ATK of 1 monster you control by half of the selected monster's ATK. If this card is destroyed: You can Special Summon 1 Level 4 or lower EARTH monster from your hand or Deck and negate its effects.
Just a little something I thought of when I saw Serenade's images. CnC?