The combination of Sweet Aroma and Darling Diamond. Her card's info says:
My Pudgyville Pony Diamond Aroma
LIGHT / Pudgyville Pony-Type Fusion / Level 6 / ATK 0 / DEF 2300
"My Pudgyville Pony Darling Diamond" + "My Pudgyville Pony Sweet Aroma"
Cannot be destroyed by battle. When this face-up card is targeted for an attack: Return the attacking monster to the owner's hand at the end of the Damage Step.
Super Rare