Ostinato [MP19-EN232] Common Basic Fairy Energy You must control no monsters

You must control no monsters to activate and to resolve this effect

When this card is Special Summoned: You can return all Spell and Trap Cards your opponent controls to the hand

Set: HeartGold & SoulSilver: Undaunted Type: Darkness Rarity: Common Retreat cost: Colorless

you lose the Duel

your battling monster gains ATK equal to the ATK of the opponent's monster it is battling

Ostinato [MP19-EN232] Common Basic Fairy Energy You must control no monstersSet: 2019 Gold Sarcophagus Tin Mega Pack Card type: Normal Spell Rarity: Common If you control no monsters: Fusion Summon 1 "Melodious" Fusion Monster from your Extra Deck, using 2 monsters from your hand and or Deck as Fusion Material. During the End Phase of this turn, destroy the monster Fusion Summoned by this effect, and if you do, if all the Fusion Materials that were used for its Fusion Summon are in your GY, you can Special Summon all of them.