Yu-Gi-Oh! Wind-Up Shark (Platinum Secret Rare) - Quarter Century Stampede

When a "Wind-Up" monster is Normal or Special Summoned to your side of the field: You can Special Summon this card from your hand. Once per turn: You can activate 1 of these effects.
• Increase this card's Level by 1, until the End Phase.
• Reduce this card's Level by 1, until the End Phase.