By enchanting your creature with Quicksilver Dagger, you gain a repeatable way to tap for direct damage while constantly replenishing your hand, but it’s Mind Over Matter that breaks this interaction wide open. Because Mind Over Matter lets you untap that creature simply by discarding a card, every single card drawn by the Dagger becomes the exact fuel needed to reset it. This creates a closed-loop engine that lets you churn through your entire library, picking off opponents with ease.