Smile (スマイル Sumairu) is a series of Spell and Trap Cards used by Yuya Sakaki, Yusho Sakaki, and Yoko Sakaki in Yu-Gi-Oh! ARC-V. Aesthetically, cards in this series feature smiley faces in their artwork, which can be seen in the dueling environment when the cards are played. Each card in this series also have effects that concern the ATK of monsters on the field.
| Smile || ATK-based effect
| Potion || Draw 2 cards if a monster(s) your opponent controls gains ATK while you control no monsters
| Universe || Your opponent gains LP equal to the combined ATK of every Pendulum Monster that was Special Summoned by this card's effect
| World || Increase the ATK of all face-up monsters currently on the field by 100 for each monster currently on the field, until the End Phase